MESSENGER-5570 acl status events up to collapsability

Riot/Modules/MatrixKit/Utils/EventFormatter/MXKEventFormatter.m

@@ -323,7 +323,7 @@ static NSString *const kRepliedTextPattern = @"<mx-reply>.*<blockquote>.*<br>(.*
 {
     // Check we can output the error
     NSParameterAssert(error);
-    
+        
     *error = MXKEventFormatterErrorNone;
     
     // Filter the events according to their type.
@@ -1673,6 +1673,10 @@ static NSString *const kRepliedTextPattern = @"<mx-reply>.*<blockquote>.*<br>(.*
             displayText = [MXBeaconInfo modelFromJSON:event.content].desc;
             break;
         }
+        case MXEventTypeRoomServerACL: {
+            displayText = [[[FederationEventHelper alloc] init] statusInTimelineForEventWithEvent:event];
+            break;
+        }
         default:
             *error = MXKEventFormatterErrorUnknownEventType;
             break;