Fix line-collision on wrapped header titles
remove vendored test JS
batch actions allow add a proc to form parameter.
Fix i18n for pluralized model names

On Rails 4.0, translating a model with count: 1.1 was returning the
singular version.
Boolean attributes use status tag by default
Add better loking template for registrations#new view for admin users. Locale for English and Polish is added.
Merge pull request #2855 from krzysztofbialek/#2790

Properly styled registrations#new template for admin users
Revert "make CSV downloads respect pagination"

This reverts commit a8ad4f989caec3a9ffbc820a949f309d2ce1a832.

Ref: #2847
Merge pull request #2627 from shekibobo/fix-multiline-header

Fix line-collision on wrapped header titles
Merge pull request #2778 from WilliamZang/master

batch actions allow add a proc to form parameter.
updates to #2778
add 'equals' to the filter predicates that default to string

as discovered by @JakeAustwick in IRC:

https://botbot.me/freenode/activeadmin/msg/9660435/
refactor tests for string filters w/ a predicate (e.g. body_equals)
lock Travis icon in README to the master branch
Add ability to order by hstore columns in PostgreSQL

Example:

```ruby
class Device < ActiveRecord::Base
  store_accessor :information, :model
end
```

```ruby
ActiveAdmin.register Device do
  index do
    column :model, sortable: "information->'model'"
  end
end
```
Merge pull request #2844 from AndreyChernyh/f/add-hstore-sort

Add ability to order by hstore columns in PostgreSQL
#2414: don't accidentally set up AA routes multiple times
Support scopes with spaces in the name
clarify the state of the project in the README
Check show action for id column in index