create search_subtrips controller and model and show view
improve booking controller. build booking onject by subtrip
create search page and form in search_subtrips sontroller
test paperclip with amason s3
set amazon s3 variables
replace image field of vehicles with paperclip image field
add authentication with CanCan to users trips cities dashboard shouts
add admin column to user model
add remove buttom and related methods to shouts(text_shout and photo_shout)
Authorization issuse for vehicle with CanCan
Authorization issuse for countries, search_subtrips, states, vehicle_brands and vehicle_models
create a helper function in application helper for create flash message
move codes for nav, flash message, site-header to partial and start css
add persian datePicker with its related js and css files to vender and set in assets
render search_subtrip form in home/show and adjust datepicker in it