removed mutators from series.

UI/Handlebars/Helpers/Episode.js

@@ -0,0 +1,18 @@
+'use strict';
+define(
+    [
+        'handlebars',
+        'Shared/FormatHelpers'
+    ], function (Handlebars, FormatHelpers) {
+        Handlebars.registerHelper('episodeNumberHelper', function () {
+
+            if (this.series.seriesType === 'daily') {
+                return FormatHelpers.DateHelper(this.airDate);
+            }
+
+            else {
+                return '{0}x{1}'.format(this.seasonNumber, this.paddedEpisodeNumber);
+            }
+
+        });
+    });