Upgrade Rails to 4.0.9

Latest security patches, and staying up to date.
Update rails-sass to 4.0.2

This required dropping a completely missing file and surrounding
selectors from the SCSS.
Merge pull request #45 from alphagov/rails-409

Upgrade Rails to 4.0.9
Rename some development funding metadata keys

- value_of_fund -> value_of_funding
- application_state -> fund_state
Merge pull request #46 from alphagov/rename-some-development-funding-keys

Rename some development funding metadata keys