Merge pull request #2097 from pjackson28/v3.0

Tweaked project mega menu navigation
Merge pull request #2099 from pjackson28/v3.0

Fixed legend overflow issue in #2076 with the fix proposed by @patheard
Merge pull request #2101 from pjackson28/v3.0

Changed fix in #2099 to box-sizing Compass mixin
Icons: Fix external link class specificity

- Header and footer external links exhibit the same behaviour as before
without the increased specificity on the body
- The 20px right padding is left for now
Iconds: Add additional comments
Icons: Update external link comments
Icons: Better specificity on rel external padding
Merge pull request #2106 from nschonni/fix-external-link-button-background

Icons: Fix external link class specificity
Merge branch 'v3.0'