Move scripts to the bottom of the page

Script tags should be the last thing on the page for performance related
reasons. We should also send as few scripts as possible.

To that end I have:

- Moved the application and analytic scripts to the bottom of the page.
- Meged the application and analytics code so its a single download.
- Moved the print detection analytics code into a JS file and included
  it with the analytics code
Fix format issues with report a problem/page meta
Align colour variables with toolkit updates
Let JS apear optionally in the head

This will enable us to transition applications over to the JS at the
bottom approach rather than forcing it upon everyone.
Get new colours from toolkit
Merge pull request #198 from alphagov/organisation-colour-fixes

Align colour variables with toolkit updates
Merge pull request #194 from alphagov/fix-smart-answer-content-footer

Fix format issues with report a problem/page meta
Merge pull request #193 from alphagov/scripts-at-the-end

Move scripts to the bottom of the page
Merge conflict
Moved teh var declaration for @edds