调整模式评级的文本，看起来不打击一些

调整模式评级对应的颜色

parts/language/lang_en.lua

@@ -61,7 +61,7 @@ return{
     ai_prebag="AI is incompatible with custom sequences which have non-tetromino",
     ai_mission="AI is incompatible with custom missions",
     switchSpawnSFX="Please turn on the block spawn SFX!",
-    ranks={"D","C","B","A","S"},
+    ranks={"B","A","S","U","X"},
     needRestart="Restart to apply all changes",
 
     saveDone="Data saved",

parts/language/lang_zh.lua

@@ -61,7 +61,7 @@ return{
     ai_prebag="不能同时开启AI和含有非四连块的自定义序列",
     ai_mission="不能同时开启AI和自定义任务",
     switchSpawnSFX="请开启方块出生音效",
-    ranks={"D","C","B","A","S"},
+    ranks={"B","A","S","U","X"},
     needRestart="重新开始以生效",
 
     saveDone="保存成功!",

parts/language/lang_zh2.lua

@@ -26,7 +26,7 @@ return{
     ai_prebag="不能同时开启电脑玩家和含有非四连块的自定义序列",
     ai_mission="不能同时开启电脑玩家和自定义任务",
 
-    ranks={"差","可","中","良","优"},
+    ranks={"可","中","良","优","极"},
 
     modInstruction="选择你要使用的模组!\n不同的模组会用不同的方式改变游戏规则,来开发新玩法挑战自我吧!\n提醒:开启一些模组会让成绩无效  你可以用键盘开关模组,按tab重置",
     modInfo={

parts/language/lang_zh3.lua

@@ -62,7 +62,7 @@ return{
     ai_prebag="AI与具有非四格拼板的自定义序列不兼容",
     ai_mission="AI与自定义使命不兼容",
     switchSpawnSFX="请打开繁殖特技效果",
-    ranks={"D","C","B","A","S"},
+    ranks={"B","A","S","U","X"},
     needRestart="请重试以使更改生效",
 
     saveDone="保存的数据",