fix(sideMenu): check whether drag is enabled before dragging

Author: perrygovier

Diff for: js/angular/controller/sideMenuController.js

@@ -309,7 +309,7 @@ function($scope, $attrs, $ionicSideMenuDelegate, $ionicPlatform, $ionicBody, $io
 
   // Handle a drag event
   self._handleDrag = function(e) {
-    if (isAsideExposed) return;
+    if (isAsideExposed || !$scope.dragContent) return;
 
     // If we don't have start coords, grab and store them
     if (!startX) {