Add a JS hook for has_many_remove:after
Trying the latest ransack

Trying the latest ransack to be compatible with the latest squeel.
Uses ransack 1.3

Uses ransack 1.3 to be compatible with the rails 4.1
update issues tracker search url in CONTRIBUTING
git ignore bin folder (for rails 4 dev usage)
reimplement `ActiveAdmin::ResourceController performing batch_action` spec
implement missing spec in unit/resource_controller_spec
fix test for 1.9.x
Easier extending default show page

I would like to add few fields to show page, but keep the defaults.

Passing block to `default_main_content` would make it use defaults + block.
introduce ActiveAdmin.flash
tests for ActiveAdmin.flash
Use a select field for a boolean input
fix site title of namespaces
Use Ransack 1.3 or higher
Merge pull request #3354 from timoschilling/patch-1

update issues tracker search url in CONTRIBUTING
test yielding block of default_main_content
Add status tag translation for Portuguese
Merge pull request #3368 from brunojabs/master

Add status tag translation for Portuguese
Fix indents in permit_params block

Indents changed to use 2 spaces instead of 1,
Merge pull request #3371 from stgeneral/patch-1

Fix indents in permit_params block