Added hook for Aside container

EVENTS.txt

@@ -87,6 +87,12 @@ StartShowContentBlock: Showing before the content container
 EndShowContentBlock: Showing after the content container
 - $action: the current action
 
+StartShowAside: Showing before the Aside container
+- $action: the current action
+
+EndShowAside: Showing after the Aside container
+- $action: the current action
+
 StartNoticeSave: before inserting a notice (good place for content filters)
 - $notice: notice being saved (no ID or URI)
 

lib/action.php

@@ -525,7 +525,10 @@ class Action extends HTMLOutputter // lawsuit
             $this->showContentBlock();
             Event::handle('EndShowContentBlock', array($this));
         }
-        $this->showAside();
+        if (Event::handle('StartShowAside', array($this))) {
+            $this->showAside();
+            Event::handle('EndShowAside', array($this));
+        }
         $this->elementEnd('div');
     }