Make Display settings the default view for the cog Language settings

Without this change, clicking the cog near the interlanguage
links can show Input settings first, and the design says that
Display settings must be shown first.

Change-Id: Ieb2dcd7efb5c1a5e1320a271ec7c7ae69d071bae

resources/js/ext.uls.interface.js

@@ -284,6 +284,7 @@
 			$ulsSettingsTrigger.attr( 'title', $.i18n( 'ext-uls-select-language-settings-icon-tooltip' ) );
 
 			$ulsSettingsTrigger.languagesettings( {
+				defaultModule: 'display',
 				onVisible: function () {
 					var left,
 						ulsTriggerOffset = $ulsSettingsTrigger.offset();