add heroku gem
hide sqlite to dev group
remove sqlite
add use static assets in production
modify gemfile
add halls models and controllers
fix database names
change halls model
add crud for halls with slots
tune project for sensitive data
remove js datepicker
add locales and small fixes
fix locales
add custom datetime picker
remove ds store
Merge branch 'feature/hall_with_timeslots_crud' into develop

* feature/hall_with_timeslots_crud:
  remove ds store
  add custom datetime picker
  fix locales
  add locales and small fixes
  remove js datepicker
  add crud for halls with slots
  change halls model
  fix database names
  add halls models and controllers
  modify gemfile
  add use static assets in production
  remove sqlite
  hide sqlite to dev group
  add heroku gem

Conflicts:
	.gitignore
	config/database.yml.sample