MXKRoomBubbleTableViewCell: Improve timestamp label positioning.
MXKRoomBubbleTableViewCell: Improve timestamp label positioning.

vector-im/riot-ios,vector-im/riot-ios,vector-im/riot-ios,vector-im/riot-ios,vector-im/vector-ios,vector-im/riot-ios,vector-im/vector-ios,vector-im/riot-ios,vector-im/vector-ios