Allow empty quality

couchpotato/core/plugins/quality/static/quality.js

@@ -29,9 +29,14 @@ var QualityBase = new Class({
 	},
 
 	getQuality: function(identifier){
+		try {
 			return this.qualities.filter(function(q){
 				return q.identifier == identifier;
 			}).pick();
+		}
+		catch(e){}
+		
+		return {}
 	},
 
 	addSettings: function(){