[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/RegisterThrottle/RegisterThrottlePlugin.php

@@ -94,8 +94,8 @@ class RegisterThrottlePlugin extends Plugin
     public function onRouterInitialized(URLMapper $m)
     {
         $m->connect('main/ipregistrations/:ipaddress',
-                    array('action'      => 'ipregistrations'),
-                    array('ipaddress'   => '[0-9a-f\.\:]+'));
+                    ['action' => 'ipregistrations'],
+                    ['ipaddress'   => '[0-9a-f\.\:]+']);
     }
 
     /**