fix project
add ktv district
add offset and limit fetch request function
change databasemanager
Merge branch 'master' of https://github.com/liubin1777/Project_Wanshangle

Conflicts:
	WanShangLe/.DS_Store

WanShangLe/WanShangLe.xcodeproj/project.xcworkspace/xcuserdata/liu.xcuse
rdatad/UserInterfaceState.xcuserstate