create some scaffold

- role
- customer vehicle
- rate price
- spend oil
Merge branch 'ng-dev' of https://github.com/riseplus/BuyAndSale into ng-dev

Conflicts:
	log/development.log
	tmp/cache/assets/development/sprockets/2f5173deea6c795b8fdde723bb4b63af
	tmp/cache/assets/development/sprockets/f7cbd26ba1d28d48de824f0e94586655