Merge branch 'develop' of github.com:friendica/friendica into rewrites/coding-convention-split2-4-2

Fixed some stuff:
- converted some files from DOS to Uni* (CRLF -> LF)
- removed trailing white-spaces

Signed-off-by: Roland Häder <roland@mxchange.org>

include/identity.php

@@ -3,6 +3,8 @@
  * @file include/identity.php
  */
 
+use Friendica\App;
+
 require_once 'include/ForumManager.php';
 require_once 'include/bbcode.php';
 require_once 'mod/proxy.php';