fix bug where when authentication state is changed in-dialog the comm iframe...

fix bug where when authentication state is changed in-dialog the comm iframe wouldn't notice, and would conclude the user is not authenticated based on a cached session_context response

resources/static/communication_iframe/start.js

@@ -90,6 +90,9 @@
 
   chan.bind("dialog_complete", function(trans, params) {
     pause = false;
+    // the dialog running can change authentication status,
+    // lets manually purge our network cache
+    network.clearContext();
     checkAndEmit();
   });
 }());

resources/static/shared/network.js

@@ -154,6 +154,14 @@ BrowserID.Network = (function() {
       }, onFailure);
     },
 
+    /**
+     * clear local cache, including authentication status and
+     * other session data.
+     *
+     * @method clearContext
+     */
+    clearContext: clearContext,
+
     /**
      * Log the authenticated user out
      * @method logout