Bug 32912: Use template wrapper for notices tabs

Bug 32912: Use template wrapper for notices tabs

This patch updates the notices template to replace tab markup with
the use of WRAPPERs.

This patch also makes a minor correction to the color of Bootstrap
panels.

To test you must have more than one translation installed, and the
TranslateNotices preference should be enabled.

- Apply the patch and go to Tools -> Notices.
- Edit a notice.
- You should see tabs for each available language, for example
  Default, English, French.
- Test adding content to each language to confirm that the correct
  information is saved under the correct tab.
- Disable the TranslateNotices preference to confirm that the
  display is still correct without the tabbed interface.

Signed-off-by: David Nind <david@davidnind.com>
Signed-off-by: Katrin Fischer <katrin.fischer@bsz-bw.de>
Signed-off-by: Tomas Cohen Arazi <tomascohen@theke.io>