App startup improvements:

- do one and only one initialSync when the app starts. (recents-controller does not do its own anymore)
 - initialSync: get only the last message per room instead of default number of messages (10)

Prevent recents-controller from loosing its data each time the page URL changes

webclient/components/matrix/event-stream-service.js

@@ -105,7 +105,7 @@ angular.module('eventStreamService', [])
         var deferred = $q.defer();
 
         // FIXME: We are discarding all the messages.
-        matrixService.rooms().then(
+        matrixService.rooms(1, false).then(
             function(response) {
                 var rooms = response.data.rooms;
                 for (var i = 0; i < rooms.length; ++i) {
@@ -120,7 +120,7 @@ angular.module('eventStreamService', [])
                 eventHandlerService.handleEvents(presence, false);
 
                 // Initial sync is done
-                eventHandlerService.handleInitialSyncDone();
+                eventHandlerService.handleInitialSyncDone(response);
 
                 settings.from = response.data.end;
                 doEventStream(deferred);