made hidden more important
Merge pull request #1721 from Pomax/t1715

made hidden more important
Menu Icons

1. Removed strict gettext checking from grunt (should add again later).
2. Used filter for l10n in user-state.
3. Fixed locale strings in msg.json.
4. Added font-awesome icons for app menu options.
removed gettext_finder from default grunt tasks
Merge pull request #1681 from secretrobotron/menu-icons

Menu Icons
Cleaned up tray categories.

1. Implemented category descriptions.
2. Switched around category names and placed bricks as appropriate.
3. Used l10n.
used textContent instead of innerHTML for brick descriptions
added 'All Bricks' to locale strings
Merge pull request #1684 from secretrobotron/tray-categories

Cleaned up tray categories.
Updating bundles
- killed off no longer relevant routes+data, redirect for / to /designer
- removed unused locale strings