Conpherence - fix a few bugs

Summary: Fixes T3280 - when a pontificate brought back multiple transactions, we were rendering a comma. Yay hsprintf. Also fixes the noconpherences view, which broke at some point recently.

Test Plan: sent comment, then replied from different browser. when both comments loaded noted no comma. loaded a conpherence view with no conpherences and verified it looked good.

Reviewers: epriestley

Reviewed By: epriestley

CC: aran, Korvin, chad

Maniphest Tasks: T3280

Differential Revision: https://secure.phabricator.com/D6079

webroot/rsrc/js/application/conpherence/behavior-menu.js

@@ -451,6 +451,8 @@ JX.behavior('conpherence-menu', function(config) {
         } else {
           var nothreads = JX.DOM.find(layout, 'div', 'conpherence-no-threads');
           nothreads.style.display = 'block';
+          markThreadLoading(false);
+          markWidgetLoading(false);
         }
       }
     }