fix renaming error in treasures_controller index
delete current_user_treasures method that is no longer needed
fix captains#show to use new scoping methods of models
WIP ajaxing captain's treasures functionality from profile
add ajax functionality to render error when captain try to add more than 6 treasures
change error template to use foundation
WIP ajax treasure creation
WIP ajax treasure page
WIP captain treasure ajax
fix bug of rendering application js twice