[ROUTES] Allow accept-header specification during router creation

Router:
- Fix calls to connect, most of them were misusing the function's params

URLMapper:
- Minor fixes
- Documentation
- Add support for accept-header specification

Plugins/*:
- Fix calls to connect

plugins/RSSCloud/RSSCloudPlugin.php

@@ -105,7 +105,7 @@ class RSSCloudPlugin extends Plugin
     function onRouterInitialized($m)
     {
         $m->connect('/main/rsscloud/request_notify',
-                    array('action' => 'RSSCloudRequestNotify'));
+                    ['action' => 'RSSCloudRequestNotify']);
 
         // XXX: This is just for end-to-end testing. Uncomment if you need to pretend
         //      to be a cloud hub for some reason.