Update overrides.js

Inside **translate** function, **translator** refers to *global* genereting warnings. Added a **translator** variable refering to **translator** module.
This solves some problems using *bootbox* in my plugins and widgets

public/src/overrides.js

@@ -111,6 +111,11 @@ if ('undefined' !== typeof window) {
 			prompt = bootbox.prompt,
 			confirm = bootbox.confirm;
 			
+		var translator;
+		require(['translator'], function(_translator) {
+			translator = _translator;
+		});
+
 		function translate(modal) {
 			var header = modal.find('.modal-header'),
 				footer = modal.find('.modal-footer');