Add coordinate model. fixed #20
Modify models, and fixed test.
Add EscapeUtil
Add CoordinateExistsException.
Add coordinate service. fixed #17 fixed #18
Enhancement change password logic. close #22
Small refactor.
Fixed #23
Add AbstractControllerTest
Add response header.
Add dependency
Rename test methods.
Add controller tests.
fixed #25
Add error messages.
Add UserServiceTest
Rename method. doLogin -> createToken
Small refactor.
Add LoginServiceTest
Add CoordinateServiceTest