[541] Fix for javascript re-positioning

Now correctly copies all of the hidden fields into the relevant TD (so that the ID is correctly carried across and not left).  Previously the ID was tied to the position, because of the __pos__ part of the ID and so caused weird behaviour.

Also added an additional_resource__{num}__id as it was missing and I think we're likely to be creating new additional_resources all of the time.
[541] Fixes for re-ordering additional and timeseries resources

Changed to use the name attribute when locating the __pos__ so that
it handled elements without an id set.  Removes the unnecessary . in
the class name and doesn't add an empty id field in the empty row.
[#530] Link to the retina header images.
[541] Tests to ensure ONS importer isn't losing resource IDs

After several hours hunting through the rabbit hole, the three line test
change to make sure the resource IDs don't change.
[#414] Useability tweak to search results.

Changing the sort order will jump the page to the search results start.
Very minor convenience but should fix current frustration. We'll fire up
a new ticket for CKAN 2.0 if we really want to make this better.
[#476] Sync CSS class names with Drupal style ones.
[#487] Using jquery.dotdotdot on the dataset read page.
[#530] Progressive enhancement. Looks much better in IE.
[#530] Refactor to avoid destructive changes to shared files.
[#530] sharpen non-retina dgu-header.png
[#530] Non-retina crown improved.
[#530] Recieved retina CKAN logo too.
[559] Provide group parent in API.

Conflicts:

	ckanext/dgu/plugin.py
[559] Provide group parent in API - add needed files.
[#504] Scraper icons fixed
[#500] Fetch remote resources using JSONP, since IE7 can't see the CORS headers.
[#500] Seek-and-destroy fancy JS features which break before IE9.
[#509] Integrate FB, Twitter, and GooglePlus share links directly. Don't use ShareThis service or ckanext-social plugin.
[#558] Don't let Drupal try to paginate comments
[noticket] Better error handling for the ONS scraper