[FacebookBridge] Fix permalink issue (RSS-Bridge#1358)

Facebook has changed their strategy regarding permalinks, which
now include lots of unnecessary target data. Fortunately it also
contains the unique story id which we can utilize as URI.

Author: logmanoriginal

bridges/FacebookBridge.php

@@ -701,8 +701,15 @@ private function collectUserData(){
 
 						$uri = $post->find('abbr')[0]->parent()->getAttribute('href');
 
-						if (false !== strpos($uri, '?')) {
-							$uri = substr($uri, 0, strpos($uri, '?'));
+						// Extract fbid and patch link
+						if (strpos($uri, '?') !== false) {
+							$query = substr($uri, strpos($uri, '?') + 1);
+							parse_str($query, $query_params);
+							if (isset($query_params['story_fbid'])) {
+								$uri = self::URI . $query_params['story_fbid'];
+							} else {
+								$uri = substr($uri, 0, strpos($uri, '?'));
+							}
 						}
 
 						//Build and add final item