Fix WebFailBridge (again).

It seems that they blacklist weird user agents, but not immediately. Switched to Firefox user agent, should stop causing problems.

bridges/WebfailBridge.php

@@ -42,8 +42,7 @@ class WebfailBridge extends BridgeAbstract {
 
 	public function collectData(){
 
-		ini_set('user_agent', 'Mozilla/5.0(X11; Linux x86_64; rv:30.0) Gecko/20121202 Firefox/30.0(rss-bridge/0.1;\
-			  +https://github.com/RSS-Bridge/rss-bridge)');
+		ini_set('user_agent', 'Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:53.0) Gecko/20100101 Firefox/53.0');
 
 		$html = getSimpleHTMLDOM($this->getURI() . $this->getInput('type'));