1,UploadRow add deletePermission,downloadPermission,delete
UploadRow2;2,Permission use '*' for support any
1,CheckboxGroup,CheckboxTree,GroupCheckbox:allow value null
1,delete IfPower,add Logined;2,Uzer delete adminGrade
1,ifContract change to ifPermitted
1,ifContract remove department,user
1,fixbug:CheckboxGroup,CheckboxTree,GroupCheckbox:_value is
null;2,fixbug:MaterialBasePage:don't call appendThisRole(roles);
1,init permissions,roles,users;2,relate role can't belong to user;
1,relate roles and not relate roles
1,GroupCheckbox:add showEmptyGroup