Update to Rails 3.2.13 and setup sprockets

This also fixes a few tests which seem to have
broken (and a strange stack level bug from a
Capybara setup block)
Remove existing assets
Add new asset manifests with Bootstrap
Tidy up application layout with Bootstrap
Remove a couple of stray references to dg links
Close header tag correctly
Tidy up needs search listing

Probably requires some further tweaking
Tidy up needs search list and facets
Fix pagination links
Add formtastic-bootstrap

Not sure why we had gds-sso defined twice in the
Gemfile.
Use Bootstrap alert styles
Redesign need pages using Bootstrap

A bit simpler than before - tried to tidy it up
and give priority to the important info.
Tidy up need and source forms with Bootstrap
Use nested_form for policy owners and fact checkers

This is so much cleaner than the old javascripts
we used to do this - plus it means we can get rid
of the edit method entirely.
Fix the footer
Tidy up the import csv form
Make the header look less Bootstrappy.
Correct the case on Need-o-tron
Rails 3.2 in README.md
Merge remote branch 'origin/master' into bootstrap

Conflicts:
	README.md