Disable IME too in blacklisted browsers

Change-Id: I140352f723bc4863d14ed6441c9e173310c683b3

resources/js/ext.uls.ime.js

@@ -200,6 +200,9 @@
 	};
 
 	$( document ).ready( function () {
+		if ( !mw.uls.isBrowserSupported() ) {
+			return;
+		}
 
 		// Load the ime preferences
 		$.ime.preferences.load();