FS-8067 [verto_communicator] removing bind once from gravatar-src tag; using…

FS-8067 [verto_communicator] removing bind once from gravatar-src tag; using angular native bind once instead.

html5/verto/verto_communicator/src/partials/chat.html

@@ -19,7 +19,7 @@
 
     <div ng-repeat="member in members" class="chat-member-item">
       <span class="chat-members-avatar">
-        <img gravatar-size="40" gravatar-src-once="member.email" class="img-circle" ng-class="{'chat-member-talking': member.status.audio.talking, 'chat-member-muted': member.status.audio.muted}" />
+        <img gravatar-size="40" gravatar-src="::member.email" class="img-circle" ng-class="{'chat-member-talking': member.status.audio.talking, 'chat-member-muted': member.status.audio.muted}" />
       </span>
       <!-- FIXME(italo): Put this whole block in a flex box to avoid defining fixed width.-->
       <h4 class="chat-members-name">