Remove trailing commas
Rename section#content to main#content

This is in response to a change in static.
See https://github.com/alphagov/static/pull/294
Fix navigation styles for IE6-7

Changing how things are being positioned.
Overriding a few styles from static for global header to make them
easier to work with (i.e. derive the correct position for the
subnavigation).
Revert overrides of global header

Achieves same result with fewer style changes.
Do not show availability graphs in IE6-8
Do not override content width
Move top border back to previous element
Merge pull request #161 from alphagov/fix-ie-once-again

Fix subnavigation for IE6-8