automatically set precompile assets
make root_path options configurable
base support for custom ransackers
use ransackers as default filters
refactor AttributesTable#content_for
refactor AttributesTable#content_for specs
add spec for settings setter
add support for `config.setting_name?`

This adds a ActiveModel like questionmark attr checker:

  inheritable_setting :foo, true
  config.foo? # => true

  inheritable_setting :foo, false
  config.foo? # => false

  inheritable_setting :foo, ""
  config.foo? # => false

  inheritable_setting :foo, "bar"
  config.foo? # => true
remove dashbord view

I think @seanlinsley forgot him in 86851c603c9627c54ef73f27cbef2e2ef18a30b5
remove some images

remove some images from app/assets/images/active_admin which has no reference in the code base
fix f.inputs with class
remove doubled let namespace in register_resource_spec
change PunditAdapter to work with method_missing
remove old formtastic css class and add new ones
refactor DownloadFormatLinksHelper
remove js window.AA
simplify AA::Devise.config

Devise has `sign_out_via` since v1.2.0 (ab7f3bc1757104c053d3e3c9bf6db2de03dee830), and we have a min (soft) dependency to v3.2.x https://github.com/activeadmin/activeadmin/blob/master/lib/active_admin/dependency.rb#L3
fix build_comment_form method
Merge pull request #3611 from alexesDev/fix_build_comment_form

fix build_comment_form method
Merge pull request #3540 from activeadmin/setting_with_questionmark

Setting with questionmark