Bug 16024 - Use Font Awesome icons on item types administration page

Bug 16024 - Use Font Awesome icons on item types administration page

When editing an item type, a Glyphicon is used for the "translate" link.
It should use a Font Awesome icon instead. This patch corrects it.

To test, apply the patch and go to Administration -> Item types.

- Edit an existing item type.
- Confirm that the icon associated with the "Translate into other
  languages" link is correct.

Signed-off-by: Nick Clemens <nick@bywatersolutions.com>
Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>
Signed-off-by: Brendan A Gallagher <brendan@bywatersolutions.com>
(cherry picked from commit d638520f85e6806cbde83fa47cc7aa3e6fefa3ff)
Signed-off-by: Julian Maurice <julian.maurice@biblibre.com>