Delay loading of language settings javascript

Load them when language settings is opened using cog or ULS icon click

Change-Id: I472497c549bff0fd578156fa0113dae2d6a7a7fb

resources/js/ext.uls.ime.js

@@ -121,6 +121,17 @@
 		$moreSettingsLink = $( '<span>' )
 			.addClass( 'uls-ime-more-settings-link' );
 
+		mw.loader.using( mw.uls.languageSettingsModules, function () {
+			$moreSettingsLink.languagesettings( {
+				defaultModule: 'input',
+				onClose: function () {
+					// on close of input settings, keep focus in input area.
+					imeselector.$element.focus();
+				},
+				top: imeselector.$element.offset().top
+			} );
+		} );
+
 		// Hide the menu.
 		$moreSettingsLink.on( 'click', function ( e ) {
 			var languageSettings = $( this ).data( 'languagesettings' );