Add a debugger.
Whitespace.
Allow tagging of editions to mainstream browse pages.
Allow tagging of editions to topics.
Provide clearer indication of primary browse page.

Copy is from the Panopticon interface.
Move tag fields beneath main content

Tags don’t change too often, so the fields, which are more complex than
simple text inputs, shouldn’t obscure the main content ones.

* Move tags into a partial
* Put partial at the bottom of each form
* Add a tags header and divider to separate fields from rest of form
Cleanup spacing of tag fields

* Use a smaller grid width to match earlier form fields
* Nest each item in a form-group for vertical spacing
* Re-word the section explanation
Avoid poltergeist overlay problems

Now the smart answer buttons are not at the bottom of the page, the
fixed workflow buttons obscure them when automating a click.

* Use trigger instead of click_on to always trigger the click on the
right element and avoid poltergeist’s co-ordinate warning
Lock the collections inputs on locked resources.
Provide clearer guidance on the rename of collections.
Fix styling of tagging select boxes

This overrides the CSS rules for the select2 select boxes for assigning
tags to an edition, so that they always appear as block elements.

This was previously the case, but recent changes to the select2 
implementation in this app seems to have broken this.
Merge pull request #270 from alphagov/allow-tagging-of-collections-to-editions

Allow tagging of collections to editions