减少密码哈希迭代次数防止把手机卡烂

原来的登录和注册界面改为密码登录和邮箱登录
邮箱登录界面不再分状态，设置密码独立出一个界面
自动登录不再检测本地用过密码登录，第一次邮箱登录不设置密码但存了token也可以
整理代码

parts/scenes/login_mail.lua

@@ -0,0 +1,54 @@
+local scene={}
+
+local function _getCode()
+    local email=scene.widgetList.email:getText()
+    if not STRING.simpEmailCheck(email) then
+        MES.new('error',text.wrongEmail)
+    else
+        USER.email=email
+        NET.getCode(email)
+    end
+end
+
+local function _codeLogin()
+    local code=scene.widgetList.code:getText():upper()
+    if #code~=8 then
+        MES.new('error',text.wrongCode)
+    else
+        NET.codeLogin(USER.email,code)
+    end
+end
+
+function scene.sceneInit()
+    scene.widgetList.email:setText(USER.email or "")
+    scene.widgetList.code:clear()
+end
+
+function scene.keyDown(key,rep)
+    if key=='escape' and not rep then
+        SCN.back()
+    elseif key=='return' then
+        if #scene.widgetList.code:getText():upper()==0 then
+            _getCode()
+        else
+            _codeLogin()
+        end
+    else
+        return true
+    end
+end
+
+scene.widgetList={
+    WIDGET.newText{name='title',        x=80,  y=50,font=70,align='L'},
+    WIDGET.newButton{name='login_pw',   x=1080,y=100,w=260,h=80,color='lY',code=function() SCN.swapTo('login_pw','swipeR') end},
+
+    WIDGET.newInputBox{name='email',    x=380, y=200,w=626,h=60,limit=128},
+    WIDGET.newKey{name='send',          x=640, y=330,w=300,h=80,font=40,code=_getCode},
+
+    WIDGET.newInputBox{name='code',     x=380, y=400,w=626  ,h=60,limit=8},
+    WIDGET.newKey{name='verify',        x=640, y=530,w=300,h=80,font=40,code=_codeLogin},
+
+    WIDGET.newButton{name='back',       x=1140,y=640,w=170,h=80,sound='back',font=60,fText=CHAR.icon.back,code=pressKey'escape'},
+}
+
+return scene