Improves documentation on the grid system.
Improves documentation on grid system.
Removes deprecated grid system units.
Fixes float bug in .unit-1-7

Units were not floating at narrowest screen sizes.
Adds .unit-1-6 to grid system.

Also removes .related-nav code that was better served by the new grid system module.
Adds classes for the Drupal template.

Adds classes that make styles work more easily with the Drupal template in buttons and header.
Merge branch 'master' of https://github.com/revoltpuppy/Evergreen

Conflicts:
	sass/layout/_grid.scss