add microcopy page headers

Microcopy has been added to how gov works, ministers, history and get involved pages.
History and get involved pages are currently in branches being created separately.
Once these are complete and have been merged I think these 4 pages should share code and
the CSS should be moved to a helper which is shared. Rather than 4 pages with 4 lots of the same code in 4 different places.

https://www.pivotaltracker.com/story/show/45154863
Implement new colours from the branch people

This is the latest selection of colours. I have also updated all the
varaibles to match the current slugs for the organisations.

Bumped the version of the toolkit to get the new colours which required
changing how we import the media player js.
Merge pull request #327 from alphagov/new-colours

Implement new colours from the branch people

https://www.pivotaltracker.com/story/show/45773975
remove whitespace
more whitespace
update admin jquery.player.min.js