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 #2112 from pjackson28/master

Changed tab top margin from pixels to ems to take into account text scaling (for #2107)
Merge pull request #2113 from pjackson28/master

Fixed Footnotes RTL support
Merge pull request #2115 from pjackson28/master

Fixed RTL support for Tabbed Interface
Merge pull request #2116 from pjackson28/master

Fixed RTL support for jQuery Mobile Column toggle
Merge pull request #2117 from pjackson28/master

Corrected spacing in Form validation error message summary
Merge pull request #2118 from pjackson28/master

Minor code cleanup from comments in #2115
Merge pull request #2119 from pjackson28/master

Fixed Form validation English summary message spacing
Merge pull request #2106 from nschonni/fix-external-link-button-background

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