Bug 16027 - Use Font Awesome icons in the professional cataloging interface

Bug 16027 - Use Font Awesome icons in the professional cataloging interface

The professional cataloging interface uses Glyphicons. They should be
replaced with Font Awesome icons.

I have replaced the "Import record" icon as per the discussion on Bug
15966 about which icon better expresses import vs. export.

To test, apply the patch and go to Cataloging -> Advanced editor.

- Confirm that the icons in the toolbar look correct.
- Click the "Macros" button and confirm that toolbar buttons in the
  modal look correct.
- Click the "Advanced" link in the left-hand sidebar and confirm that
  the buttons in that modal look correct.
- Click the "Save" button without adding anything to the blank record.
  Confirm that the "Missing..." error messages are styled with the
  correct icon.

Signed-off-by: Mark Tompsett <mtompset@hotmail.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 5fb78052f4e3cd3bb5562fcc2471628438a0fe77)
Signed-off-by: Julian Maurice <julian.maurice@biblibre.com>