fix setting model
Merge https://github.com/note109/taskapp-api into feature/settingModelFeat
Merge branch 'feature/settingModelFeat' into develop
add: settings controller
add submodule; taskapp-cms
Merge branch 'feature/settingModelFeat' of https://github.com/note109/taskapp-api into feature/settingModelFeat

Conflicts:
	app/models/setting.rb
	spec/factories/settings.rb