add has_attachment to privileges and courses model
fix privileges api to return image url
change courses api
fix courses api
add merchant api
remove user params when pass params api
change some api
change user model, commit name to presense: false
change user model, commit name to presense: false
change user model, commit name to presense: false
change user model, commit name to presense: false
fix booking
Merge branch 'master' of github.com:github15693/rms