Merge pull request #5 from sktocha/master

mini fix settings(model) -> (method)case_value
fix day_short localization
Merge branch 'master' of github.com:leschenko/ab_admin
fix search_form_builder input :as and :value options
menu builder add url option to menu group
add url to select2 render
not respond_to json by default
select2 create choise js refactor
fix typo
capture block input
columns_hider refactor
admin_editable not depend on IR
add id to display_name_methods
display_name return if object evaluates to false
fix columns_hider
add export ability check
add resource css class to body
rename Settings.load method to Settings.load_config
use admin_access method instead of moderator
fix action item ability check