Consolidate publication table views

* Remove duplicated published edition partial
* Add a little extra logic to publication partial
Merge pull request #275 from alphagov/pub-table-partials

Consolidate publication table views
Form and display of important notes as actions.

Important note model has changed from a string on the Edition model to an
instance of Action, to allow including author and timestamp.
Controller and form to resolve important notes.
Migration to convert important_notes to actions.
Correct reference to note in index view.
Display delete important note alongside buttons

* Prevent wrapping using a new helper class
Integration tests for new important_note behaviour
Bump govuk_content_models version
Merge pull request #277 from alphagov/important_notes

Audit trail for important notes
Bump jasmine gem

*
https://github.com/pivotal/jasmine-gem/blob/master/release_notes/v2.0.3.
md
Get Select2 assets from gem

* Update to version 3.5.0 of Select 2
* Update Bootstrap 3 Select2 style overrides
* Apply site wide in preparation for user select improvements
  * Remove specific business support javascript includes and styles
Add form-control class to select2 element

* The select2 overrides are more specific and only apply fixes to
elements with a form-control class. Normally this is passed through to
the select2 widget but the business support script is generating a
hidden input
* Add form-control to the hidden input when it’s created
Fix alignment of checkboxes on business support

* Checkboxes were using a markup pattern from Bootstrap 2 that appears
to have broken with a Boostrap 3.2 upgrade
* Use the recommended pattern from
http://getbootstrap.com/css/#forms
Enhance user select drop down with select2

* Allow users to search the list of users instead of having to scroll
up and down
Bump admin gem to 1.1.7
Remove inline styles now provided by gem
Delete unused vendor assets

* Glyphicons and crown come from admin gem
* Select2 assets come from select gem
Remove old HTML5 shim

Shims are already provided via the admin gem
Merge pull request #278 from alphagov/improved-people-selector

Enhanced assignee selector