CC-3035 : Should be able to resize a show, have it affect all future instances of the show

resizing is only working for single instance currently like the past.

airtime_mvc/application/models/Show.php

@@ -1196,6 +1196,7 @@ class Application_Model_Show {
     {
         global $CC_DBC;
 
+        //UTC DateTime object
         $showsPopUntil = Application_Model_Preference::GetShowsPopulatedUntil();
 
         //if application is requesting shows past our previous populated until date, generate shows up until this point.