Upgrade bootstrap. Properly this time…

Add the less gem. The latest version of
twitter-bootstrap-rails makes the soft dependency,
but we can't use the statically compiled version
because we wan't the remove the responsive design.
Update simple_form.

Re-generate initialisers.
Fix the type of the currency input.
Fix styling of loan lookup form in the navbar.
Capitalize navigation items.
Use two navbars for our navigation.

The newer version of Bootstrap increased the font
size of the navigation items. This pushed some of
the navigation to three lines which I found
unacceptable.
Search belongs outside of the nav.
Save space in the navbar by using a dropdown for reports.
Fix blue outline on dropdown menus.
Fix training styling.
Merge pull request #109 from alphagov/fix-bootstrap

Fix Bootstrap