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diff --git a/addon/twitter/README b/addon/twitter/README
deleted file mode 100644
index e6d5f12c9..000000000
--- a/addon/twitter/README
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@@ -1,77 +0,0 @@
-____ Twitter Plugin ____
-By Tobias Diekershoff
-   tobias.diekershoff(at)gmx.net
-
-!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
-!!   This addon is currently under development. If you have any problem     !!
-!!   with it, please contact the Author.                                    !!
-!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
-
-With this addon to Friendika you can give your user the possibility to post
-their *public* messages to Twitter. The messages will be strapped their rich
-context and shortened to 140 characters length if necessary. If shortening of
-the message was performed a link will be added to the Tweet pointing to the
-original message on your server.
-
-There is a similar addon for forwarding public messages to
-"StatusNet":http://status.net [[StatusNet Plugin]].
-
-Online version of this document: http://ur1.ca/35mml
-
-___ Requirements ___
-
-To use this plugin you have to register your Friendika instance as an
-_client application_ for Twitter with _read and write_ access, we do not intend
-to use Twitter for login. The registration can be done at twitter.com/apps
-and you need to have a Twitter account to do so.
-
-After you registered the application you get an OAuth consumer key / secret
-pair that identifies your app, you will need them for configuration.
-
-The inclusion of a shorturl for the original posting in cases when the
-message was longer than 140 characters requires it, that you have *PHP5+* and
-*curl* on your server.
-
-___ Where to find ___
-
-In the Friendika git repository /addon/twitter/, this directory contains
-all required PHP files (including the Twitter OAuth library [1] by Abraham
-Williams, MIT licensed and the Slinky library [2] by Beau Lebens, BSD license),
-a CSS file for styling of the user configuration and an image to _Sign in with
-Twitter_.
-
-[1] https://github.com/abraham/twitteroauth
-[2] http://dentedreality.com.au/projects/slinky/
-
-___ Configuration ___
-
-__ Global Configuration __
-
-To activate this addon add @twitter@ to the list of active addons in your
-.htconfig.php file 
-    $a->config['system']['addon'] = "twitter, ..."
-Afterwards you need to add your OAuth consumer key / secret pair to it by
-adding the following two lines
-
-$a->config['twitter']['consumerkey'] = 'your consumer KEY here';
-$a->config['twitter']['consumersecret'] = 'your consumer SECRET here';
-
-When this is done your user can now configure their Twitter connection at
-"Settings -> Plugin Settings" and enable the forwarding of their *public*
-messages to Twitter.
-
-__ User Configuration __
-
-When the OAuth consumer informations are correctly placed into the
-configuration file and a user visits the "Plugin Settings" page they can now
-connect to Twitter. To do so one has to follow the _Sign in with Twitter_
-button (the page will be opened in a new browser window/tab) and get a PIN from
-Twitter. This PIN has to be entered on the settings page. After submitting the
-PIN the plugin will get OAuth credentials identifying this user from the
-Friendika account.
-
-If this first step was successful the Twitter configuration will be changed
-on the "Plugin Settings" page displaying two check boxes. One to enable/disable
-the forwarding of *all public* postings to Twitter and one to clear the
-personal configuration from the Twitter credentials.
-
diff --git a/addon/twitter/admin.tpl b/addon/twitter/admin.tpl
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--- a/addon/twitter/admin.tpl
+++ /dev/null
@@ -1,3 +0,0 @@
-{{ inc field_input.tpl with $field=$consumerkey }}{{ endinc }}
-{{ inc field_input.tpl with $field=$consumersecret }}{{ endinc }}
-<div class="submit"><input type="submit" name="page_site" value="$submit" /></div>
diff --git a/addon/twitter/lighter.png b/addon/twitter/lighter.png
deleted file mode 100644
index 297bb0340..000000000
--- a/addon/twitter/lighter.png
+++ /dev/null
diff --git a/addon/twitter/twitter.css b/addon/twitter/twitter.css
deleted file mode 100644
index 899cfd173..000000000
--- a/addon/twitter/twitter.css
+++ /dev/null
@@ -1,41 +0,0 @@
-
-
-#twitter-avatar {
-	float: left;
-	width: 48px;
-	height: 48px;
-	padding: 2px;
-}
-#twitter-info-block {
-	height: 52px;
-	vertical-align: middle;
-}
-#twitter-disconnect-label {
-	float: left;
-	width: 200px;
-	margin-bottom: 25px;
-}
-
-#twitter-disconnect {
-	float: left;
-}
-#twitter-enable-label {
-	float: left;
-	width: 200px;
-	margin-bottom: 5px;
-}
-
-#twitter-checkbox {
-	float: left;
-}
-#twitter-pin-label {
-	float: left;
-	width: 200px;
-	margin-bottom: 25px;
-}
-
-#twitter-pin {
-	float: left;
-}
-
-
diff --git a/addon/twitter/twitter.php b/addon/twitter/twitter.php
deleted file mode 100644
index 51b55fd0a..000000000
--- a/addon/twitter/twitter.php
+++ /dev/null
@@ -1,285 +0,0 @@
-<?php
-/**
- * Name: Twitter Connector
- * Version: 1.0.1
- * Author: Tobias Diekershoff <https://diekershoff.homeunix.net/friendika/profile/tobias>
- */
-
-
-/*   Twitter Plugin for Friendika
- *
- *   Author: Tobias Diekershoff
- *           tobias.diekershoff@gmx.net
- *
- *   License:3-clause BSD license
- *
- *   Configuration:
- *     To use this plugin you need a OAuth Consumer key pair (key & secret)
- *     you can get it from Twitter at https://twitter.com/apps
- *
- *     Register your Friendika site as "Client" application with "Read & Write" access
- *     we do not need "Twitter as login". When you've registered the app you get the
- *     OAuth Consumer key and secret pair for your application/site.
- *
- *     Add this key pair to your global .htconfig.php
- *
- *     $a->config['twitter']['consumerkey'] = 'your consumer_key here';
- *     $a->config['twitter']['consumersecret'] = 'your consumer_secret here';
- *
- *     To activate the plugin itself add it to the $a->config['system']['addon']
- *     setting. After this, your user can configure their Twitter account settings
- *     from "Settings -> Plugin Settings".
- *
- *     Requirements: PHP5, curl [Slinky library]
- *
- *     Documentation: http://diekershoff.homeunix.net/redmine/wiki/friendikaplugin/Twitter_Plugin
- */
-
-/*   __TODO__
- *
- *   - what about multimedia content?
- *     so far we just strip HTML tags from the message
- */
-
-function twitter_install() {
-	//  we need some hooks, for the configuration and for sending tweets
-	register_hook('plugin_settings', 'addon/twitter/twitter.php', 'twitter_settings'); 
-	register_hook('plugin_settings_post', 'addon/twitter/twitter.php', 'twitter_settings_post');
-	register_hook('post_local_end', 'addon/twitter/twitter.php', 'twitter_post_hook');
-	register_hook('jot_networks', 'addon/twitter/twitter.php', 'twitter_jot_nets');
-	logger("installed twitter");
-}
-
-
-function twitter_uninstall() {
-	unregister_hook('plugin_settings', 'addon/twitter/twitter.php', 'twitter_settings'); 
-	unregister_hook('plugin_settings_post', 'addon/twitter/twitter.php', 'twitter_settings_post');
-	unregister_hook('post_local_end', 'addon/twitter/twitter.php', 'twitter_post_hook');
-	unregister_hook('jot_networks', 'addon/twitter/twitter.php', 'twitter_jot_nets');
-}
-
-function twitter_jot_nets(&$a,&$b) {
-	if(! local_user())
-		return;
-
-	$tw_post = get_pconfig(local_user(),'twitter','post');
-	if(intval($tw_post) == 1) {
-		$tw_defpost = get_pconfig(local_user(),'twitter','post_by_default');
-		$selected = ((intval($tw_defpost) == 1) ? ' checked="checked" ' : '');
-		$b .= '<div class="profile-jot-net"><input type="checkbox" name="twitter_enable"' . $selected . ' value="1" /> ' 
-			. t('Post to Twitter') . '</div>';	
-	}
-
-
-}
-
-function twitter_settings_post ($a,$post) {
-	if(! local_user())
-		return;
-	// don't check twitter settings if twitter submit button is not clicked	
-	if (!x($_POST,'twitter-submit')) return;
-	
-	if (isset($_POST['twitter-disconnect'])) {
-		/***
-		 * if the twitter-disconnect checkbox is set, clear the OAuth key/secret pair
-		 * from the user configuration
-		 * TODO can we revoke the access tokens at Twitter and do we need to do so?
-		 */
-		del_pconfig( local_user(), 'twitter', 'consumerkey'  );
-		del_pconfig( local_user(), 'twitter', 'consumersecret' );
-                del_pconfig( local_user(), 'twitter', 'post' );
-                del_pconfig( local_user(), 'twitter', 'post_by_default' );
-	} else {
-	if (isset($_POST['twitter-pin'])) {
-		//  if the user supplied us with a PIN from Twitter, let the magic of OAuth happen
-		logger('got a Twitter PIN');
-		require_once('library/twitteroauth.php');
-		$ckey    = get_config('twitter', 'consumerkey'  );
-		$csecret = get_config('twitter', 'consumersecret' );
-		//  the token and secret for which the PIN was generated were hidden in the settings
-		//  form as token and token2, we need a new connection to Twitter using these token
-		//  and secret to request a Access Token with the PIN
-		$connection = new TwitterOAuth($ckey, $csecret, $_POST['twitter-token'], $_POST['twitter-token2']);
-		$token   = $connection->getAccessToken( $_POST['twitter-pin'] );
-		//  ok, now that we have the Access Token, save them in the user config
- 		set_pconfig(local_user(),'twitter', 'oauthtoken',  $token['oauth_token']);
-		set_pconfig(local_user(),'twitter', 'oauthsecret', $token['oauth_token_secret']);
-                set_pconfig(local_user(),'twitter', 'post', 1);
-                //  reload the Addon Settings page, if we don't do it see Bug #42
-                goaway($a->get_baseurl().'/settings/addon');
-	} else {
-		//  if no PIN is supplied in the POST variables, the user has changed the setting
-		//  to post a tweet for every new __public__ posting to the wall
-		set_pconfig(local_user(),'twitter','post',intval($_POST['twitter-enable']));
-                set_pconfig(local_user(),'twitter','post_by_default',intval($_POST['twitter-default']));
-                info( t('Twitter settings updated.') . EOL);
-	}}
-}
-function twitter_settings(&$a,&$s) {
-        if(! local_user())
-                return;
-        $a->page['htmlhead'] .= '<link rel="stylesheet"  type="text/css" href="' . $a->get_baseurl() . '/addon/twitter/twitter.css' . '" media="all" />' . "\r\n";
-	/***
-	 * 1) Check that we have global consumer key & secret
-	 * 2) If no OAuthtoken & stuff is present, generate button to get some
-	 * 3) Checkbox for "Send public notices (140 chars only)
-	 */
-	$ckey    = get_config('twitter', 'consumerkey' );
-	$csecret = get_config('twitter', 'consumersecret' );
-	$otoken  = get_pconfig(local_user(), 'twitter', 'oauthtoken'  );
-	$osecret = get_pconfig(local_user(), 'twitter', 'oauthsecret' );
-        $enabled = get_pconfig(local_user(), 'twitter', 'post');
-	$checked = (($enabled) ? ' checked="checked" ' : '');
-        $defenabled = get_pconfig(local_user(),'twitter','post_by_default');
-	$defchecked = (($defenabled) ? ' checked="checked" ' : '');
-
-	$s .= '<div class="settings-block">';
-	$s .= '<h3>'. t('Twitter Posting Settings') .'</h3>';
-
-	if ( (!$ckey) && (!$csecret) ) {
-		/***
-		 * no global consumer keys
-		 * display warning and skip personal config
-		 */
-		$s .= '<p>'. t('No consumer key pair for Twitter found. Please contact your site administrator.') .'</p>';
-	} else {
-		/***
-		 * ok we have a consumer key pair now look into the OAuth stuff
-		 */
-		if ( (!$otoken) && (!$osecret) ) {
-			/***
-			 * the user has not yet connected the account to twitter...
-			 * get a temporary OAuth key/secret pair and display a button with
-			 * which the user can request a PIN to connect the account to a
-			 * account at Twitter.
-			 */
-		        require_once('library/twitteroauth.php');
-			$connection = new TwitterOAuth($ckey, $csecret);
-			$request_token = $connection->getRequestToken();
-			$token = $request_token['oauth_token'];
-			/***
-			 *  make some nice form
-			 */
-			$s .= '<p>'. t('At this Friendika instance the Twitter plugin was enabled but you have not yet connected your account to your Twitter account. To do so click the button below to get a PIN from Twitter which you have to copy into the input box below and submit the form. Only your <strong>public</strong> posts will be posted to Twitter.') .'</p>';
-			$s .= '<a href="'.$connection->getAuthorizeURL($token).'" target="_twitter"><img src="addon/twitter/lighter.png" alt="'.t('Log in with Twitter').'"></a>';
-			$s .= '<div id="twitter-pin-wrapper">';
-			$s .= '<label id="twitter-pin-label" for="twitter-pin">'. t('Copy the PIN from Twitter here') .'</label>';
-			$s .= '<input id="twitter-pin" type="text" name="twitter-pin" />';
-			$s .= '<input id="twitter-token" type="hidden" name="twitter-token" value="'.$token.'" />';
-			$s .= '<input id="twitter-token2" type="hidden" name="twitter-token2" value="'.$request_token['oauth_token_secret'].'" />';
-            $s .= '</div><div class="clear"></div>';
-            $s .= '<div class="settings-submit-wrapper" ><input type="submit" name="twitter-submit" class="settings-submit" value="' . t('Submit') . '" /></div>';
-		} else {
-			/***
-			 *  we have an OAuth key / secret pair for the user
-			 *  so let's give a chance to disable the postings to Twitter
-			 */
-                        require_once('library/twitteroauth.php');
-			$connection = new TwitterOAuth($ckey,$csecret,$otoken,$osecret);
-			$details = $connection->get('account/verify_credentials');
-			$s .= '<div id="twitter-info" ><img id="twitter-avatar" src="'.$details->profile_image_url.'" /><p id="twitter-info-block">'. t('Currently connected to: ') .'<a href="https://twitter.com/'.$details->screen_name.'" target="_twitter">'.$details->screen_name.'</a><br /><em>'.$details->description.'</em></p></div>';
-			$s .= '<p>'. t('If enabled all your <strong>public</strong> postings can be posted to the associated Twitter account. You can choose to do so by default (here) or for every posting separately in the posting options when writing the entry.') .'</p>';
-			$s .= '<div id="twitter-enable-wrapper">';
-			$s .= '<label id="twitter-enable-label" for="twitter-checkbox">'. t('Allow posting to Twitter'). '</label>';
-			$s .= '<input id="twitter-checkbox" type="checkbox" name="twitter-enable" value="1" ' . $checked . '/>';
-                        $s .= '<div class="clear"></div>';
-                        $s .= '<label id="twitter-default-label" for="twitter-default">'. t('Send public postings to Twitter by default') .'</label>';
-                        $s .= '<input id="twitter-default" type="checkbox" name="twitter-default" value="1" ' . $defchecked . '/>';
-			$s .= '</div><div class="clear"></div>';
-
-			$s .= '<div id="twitter-disconnect-wrapper">';
-                        $s .= '<label id="twitter-disconnect-label" for="twitter-disconnect">'. t('Clear OAuth configuration') .'</label>';
-                        $s .= '<input id="twitter-disconnect" type="checkbox" name="twitter-disconnect" value="1" />';
-			$s .= '</div><div class="clear"></div>';
-			$s .= '<div class="settings-submit-wrapper" ><input type="submit" name="twitter-submit" class="settings-submit" value="' . t('Submit') . '" /></div>'; 
-		}
-	}
-        $s .= '</div><div class="clear"></div></div>';
-}
-
-
-function twitter_post_hook(&$a,&$b) {
-
-	/**
-	 * Post to Twitter
-	 */
-
-        logger('twitter post invoked');
-
-	if((local_user()) && (local_user() == $b['uid']) && (! $b['private']) && (! $b['parent']) ) {
-
-		// Twitter is not considered a private network
-		if($b['prvnets'])
-			return;
-
-
-		load_pconfig(local_user(), 'twitter');
-
-		$ckey    = get_config('twitter', 'consumerkey'  );
-		$csecret = get_config('twitter', 'consumersecret' );
-		$otoken  = get_pconfig(local_user(), 'twitter', 'oauthtoken'  );
-		$osecret = get_pconfig(local_user(), 'twitter', 'oauthsecret' );
-
-		if($ckey && $csecret && $otoken && $osecret) {
-
-			$twitter_post = intval(get_pconfig(local_user(),'twitter','post'));
-			$twitter_enable = (($twitter_post && x($_POST,'twitter_enable')) ? intval($_POST['twitter_enable']) : 0);
-
-			// if API is used, default to the chosen settings
-			if($_POST['api_source'] && intval(get_pconfig(local_user(),'twitter','post_by_default')))
-				$twitter_enable = 1;
-
-			if($twitter_post && $twitter_enable) {
-				logger('Posting to Twitter', LOGGER_DEBUG);
-				require_once('library/twitteroauth.php');
-				require_once('include/bbcode.php');	
-				$tweet = new TwitterOAuth($ckey,$csecret,$otoken,$osecret);
-				$max_char = 140; // max. length for a tweet
-				$msg = strip_tags(bbcode($b['body']));
-				if ( strlen($msg) > $max_char) {
-					$shortlink = "";
-					require_once('library/slinky.php');
-					// post url = base url + /display/ + owner + post id
-					// we construct this from the Owner link and replace
-					// profile by display - this will cause an error when
-					// /profile/ is in the owner url twice but I don't
-					// think this will be very common...
-					$posturl = str_replace('/profile/','/display/',$b['owner-link']).'/'.$b['id'];
-					$slinky = new Slinky( $posturl );
-					// setup a cascade of shortening services
-					// try to get a short link from these services
-					// in the order ur1.ca, trim, id.gd, tinyurl
-					$slinky->set_cascade( array( new Slinky_UR1ca(), new Slinky_Trim(), new Slinky_IsGd(), new Slinky_TinyURL() ) );
-					$shortlink = $slinky->short();
-					// the new message will be shortened such that "... $shortlink"
-					// will fit into the character limit
-					$msg = substr($msg, 0, $max_char-strlen($shortlink)-4);
-					$msg .= '... ' . $shortlink;
-				}
-                // and now tweet it :-)
-				if(strlen($msg)) {
-					$result = $tweet->post('statuses/update', array('status' => $msg));
-					logger('twitter_post returns: ' . $result);
-				}
-
-			}
-		}
-	}
-}
-
-function twitter_plugin_admin_post(&$a){
-	$consumerkey	=	((x($_POST,'consumerkey'))		? notags(trim($_POST['consumerkey']))	: '');
-	$consumersecret	=	((x($_POST,'consumersecret'))	? notags(trim($_POST['consumersecret'])): '');
-	set_config('twitter','consumerkey',$consumerkey);
-	set_config('twitter','consumersecret',$consumersecret);
-	info( t('Settings updated.'). EOL );
-}
-function twitter_plugin_admin(&$a, &$o){
-	$t = file_get_contents( dirname(__file__). "/admin.tpl" );
-	$o = replace_macros($t, array(
-		'$submit' => t('Submit'),
-								// name, label, value, help, [extra values]
-		'$consumerkey' => array('consumerkey', t('Consumer key'),  get_config('twitter', 'consumerkey' ), ''),
-		'$consumersecret' => array('consumersecret', t('Consumer secret'),  get_config('twitter', 'consumersecret' ), '')
-	));
-}