[ADD]审批规则加约束：同种单据相同类型必须唯一，未填类型时同种单据必须唯一
[ADD]审批规则加约束：同种单据相同类型必须唯一，未填类型时同种单据必须唯一

luoguizhou/gooderp_addons,floraXiao/gooderp_addons,GoodERPJeff/gooderp_addons,luoguizhou/gooderp_addons,luoguizhou/gooderp_addons,gilbert-yuan/gooderp_addons,floraXiao/gooderp_addons,Judystudy/gooderp_addons,GoodERPJeff/gooderp_addons,gilbert-yuan/gooderp_addons,Judystudy/gooderp_addons,OpenERPJeff/gooderp_addons,floraXiao/gooderp_addons,gilbert-yuan/gooderp_addons,gilbert-yuan/gooderp_addons,OpenERPJeff/gooderp_addons,GoodERPJeff/gooderp_addons,Judystudy/gooderp_addons,OpenERPJeff/gooderp_addons