Merge branch 'master', remote-tracking branch 'remotes/upstream/master'

* remotes/upstream/master:
  sort inbox by recently replied conversations first
  file as widget and basic filing implementation for duepuntozero,slackr much more work needed - this is just for test/evaluation currently
  don't count self in number of contatcs
  invite potential connectees to the free social web
  In HTML2BBCode: fetch the URL of [EMBED] using JavaScript instead of an ajax-call to a php-script. Once there actually is embedded Code in the HTML, this function is called after every single keypress. Not only is making an ajax-call every keypress bandith intensive - it also made typing hard / slow. Making a lot of JavaScript-RegExp-Computation every keypress isn't exactly great either, but still performs better.
  Some security against XSRF-attacks
  A 'PHP Fatal error:  Call to a member function getElementsByTagName() on a non-object in mod/parse_url.php on line 191' occurred when the linked HTML-File doesn't have a HEAD. The HTML-file couln't be link to in the editor therefore.
  Mostly some checks in order to avoid Notices; 1 real bugfix in /mod/network.php
  Avoid notices
  contact.network is used later to check if a direct link or a redirect by /redir/contactid should be used
  wasn't actually changed before
  Avoid a notice
  Avoid a Notice
  Avoid a Notice
  Avoid a Notice

* master:

1 files changed, 3 insertions, 3 deletions

diff --git a/boot.php b/boot.php
index ace358faa..749ef6e3f 100755
--- a/boot.php
+++ b/boot.php
@@ -9,7 +9,7 @@ require_once('include/nav.php');
 require_once('include/cache.php');
 
 define ( 'FRIENDICA_PLATFORM',     'Friendica');
-define ( 'FRIENDICA_VERSION',      '2.3.1279' );
+define ( 'FRIENDICA_VERSION',      '2.3.1280' );
 define ( 'DFRN_PROTOCOL_VERSION',  '2.22'    );
 define ( 'DB_UPDATE_VERSION',      1131      );
 
@@ -1209,7 +1209,7 @@ function current_theme(){
 	$a = get_app();
 	
 	$system_theme = ((isset($a->config['system']['theme'])) ? $a->config['system']['theme'] : '');
-	$theme_name = ((is_array($_SESSION) && x($_SESSION,'theme')) ? $_SESSION['theme'] : $system_theme);
+	$theme_name = ((isset($_SESSION) && x($_SESSION,'theme')) ? $_SESSION['theme'] : $system_theme);
 	
 	if($theme_name && file_exists('view/theme/' . $theme_name . '/style.css'))
 		return($theme_name);
@@ -1335,7 +1335,7 @@ function profile_tabs($a, $is_owner=False, $nickname=Null){
 		array(
 			'label' => t('Profile'),
 			'url' 	=> $url.'/?tab=profile',
-			'sel'	=> (($tab=='profile')?'active':''),
+			'sel'	=> ((isset($tab) && $tab=='profile')?'active':''),
 		),
 		array(
 			'label' => t('Photos'),