Update jquery.uls

https://github.com/wikimedia/jquery.uls/commit/967eec093edb153f4fdd0e5e4

Updates:

1) Always send event when triggering onSelect
The $.uls function in jquery.uls.core in createLanguageFilter passes the
onSelect function to the $.fn.languagefilter so the onSelect there should be
made compatible.

2) Removal of png images no longer needed for old browsers.

Bug: T261973
Change-Id: Ie316cc627178dde15d22607b2099d0da96dd6fda

lib/jquery.uls/css/jquery.uls.css

@@ -1,7 +1,5 @@
 .uls-trigger {
-	background: url( ../images/language.png ) no-repeat left center;
-	/* @embed */
-	background-image: linear-gradient( transparent, transparent ), url( ../images/language.svg );
+	background: url( ../images/language.svg ) no-repeat left center;
 	padding-left: 24px;
 }
 
@@ -65,9 +63,7 @@
 }
 
 .uls-search-label {
-	background: url( ../images/search.png ) no-repeat center center;
-	/* @embed */
-	background-image: linear-gradient( transparent, transparent ), url( ../images/search.svg );
+	background: url( ../images/search.svg ) no-repeat center center;
 	background-size: 20px;
 	height: 32px;
 	width: 44px;
@@ -110,9 +106,7 @@
 }
 
 .uls-languagefilter-clear {
-	background: url( ../images/close.png ) no-repeat left center;
-	/* @embed */
-	background-image: linear-gradient( transparent, transparent ), url( ../images/close.svg );
+	background: url( ../images/close.svg ) no-repeat left center;
 	background-size: 15px;
 	cursor: pointer;
 	height: 15px;

lib/jquery.uls/src/jquery.uls.languagefilter.js

@@ -107,11 +107,11 @@
 
 					if ( this.selectedLanguage ) {
 						// this.selectLanguage will be populated from a matching search
-						this.options.onSelect( this.selectedLanguage );
+						this.options.onSelect( this.selectedLanguage, e );
 					} else if ( this.options.languages[ query ] ) {
 						// Search is yet to happen (in timeout delay),
 						// but we have a matching language code.
-						this.options.onSelect( query );
+						this.options.onSelect( query, e );
 					}
 
 					break;