removed history tab from episode modal for now.

UI/Episode/LayoutTemplate.html

@@ -11,12 +11,12 @@
     <div class="modal-body">
         <ul class="nav nav-tabs" id="myTab">
             <li><a href="#episode-summary" class="x-episode-summary">Summary</a></li>
-            <li><a href="#episode-activity" class="x-episode-activity">Activity</a></li>
+           <!-- <li><a href="#episode-activity" class="x-episode-activity">Activity</a></li>-->
             <li><a href="#episode-search" class="x-episode-search">Search Indexers</a></li>
         </ul>
         <div class="tab-content">
             <div class="tab-pane" id="episode-summary"/>
-            <div class="tab-pane" id="episode-activity"/>
+            <!--<div class="tab-pane" id="episode-activity"/>-->
             <div class="tab-pane" id="episode-search"/>
         </div>
     </div>