Display the year if date is a while in the past
Refactor CSS into SCSS
Sort environment columns based on deploy date

Sort by datetime rather than alphabetically.
Add an MIT license
Remove tests that aren't actually testing anything
Add a couple of tests for human_datetime

Zero-pad the output in human_datetime so that it gives consistently
good output for tests.
Re-add working tests for the applications table
Merge pull request #34 from alphagov/tidy-bits-and-pieces

Tidy bits and pieces