Prevent appearance of redirects in the rendered list

utils.getLanguagesByScriptGroup() runs on the object's languages
property and not on all the langdb languages. This caused
the redirects to be counted as languages. I fixed this,
and added a test to prevent it.

Also update JS langdb, because it went out of sync in of
the previous commits.

src/jquery.uls.regionfilter.js

@@ -80,10 +80,17 @@
 				// Get the languages grouped by script group
 				var languagesByScriptGroup = $.uls.data.getLanguagesByScriptGroup( this.options.languages );
 
-				for ( var scriptGroup in languagesByScriptGroup ) {
+				// Make sure that we go by the original order
+				// of script groups
+				for ( var scriptGroup in $.uls.data.scriptgroups ) {
 					// Get the languages for the script group
 					var languages = languagesByScriptGroup[scriptGroup];
 
+					// It's possible that some script groups are missing
+					if ( !languages ) {
+						continue;
+					}
+
 					// Sort it based on autonym
 					languages.sort( $.uls.data.sortByAutonym );