实现玩家设置同步到服务器

实现玩家离开房间（各种途径）
修改云存读档代码（还未实现）
移除sid，准备之后用uid本地排序序号代替（排序还未实现）
整理代码，框架跟进

parts/language/lang_en.lua

@@ -133,8 +133,9 @@ return{
     serverDown="Oops! Server is down",
     requestFailed="Request failed",
 
-    onlinePlayerCount="Online",
+    onlinePlayerCount="Online: $1",
     createRoomSuccessed="Room created",
+    playerKicked="[$1] removed [$2] from room",
     started="Playing",
     joinRoom="has entered the room.",
     leaveRoom="has left the room.",