Updating copy and styles for admin header
Navigation tweaks and fixes
• update js to work as required for both secondary drop down navs
• tweak styling and css
• general layout tidy up
Bug fixes after browser testing
• Fix IE6 header
• tidy dropdown for IE and FF
• tidy code and make layout consistent for user login list top right
Add class back in to fix test failure

Although, I question where this links to in admin now. Should we point it at How gov works?
update tablet to desktop to fix problems with tablet layout
Responding to pull request feedback and attempt ot fix failing cucumber test
check new document test fail fix
cucumber test fixes
Fix optimistic selector

The new 'Edit documents' link was matching the `text: "Edit"` selector
in Capybara. The selector is now more specific (check that a link to the
edit page exists and has the text "Edit").
Merge pull request #760 from alphagov/new-admin-header

New admin header

https://www.pivotaltracker.com/story/show/54342306