Grid icons: added padding-right to rel='external' links in lightbox
Tabbedinterface (mobile): allow URL hash to determine active tab to display
Merge pull request #2457 from patheard/mobile-default-tab

Tabbedinterface (mobile): allow URL hash to determine active tab to display
Merge pull request #2455 from patheard/rel-external

Grid icons: added padding-right to rel='external' links in lightbox
Removed extra left and right margins from error container's children in form validation SCSS.
Fixed errorContainer declaration issues in form validation SCSS.
Merge pull request #2461 from EricDunsworth/v3.0-formvalid-error-margins

Removed extra left and right margins from error container's children in ...
Form validation: Fixed invalid SCSS extend to a non-existent placeholder.