Bug 16064 - Remove use of image to indicate approval in tags moderation

Bug 16064 - Remove use of image to indicate approval in tags moderation

This patch updates the tags moderation template to use text labels to
mark tag moderation status, eliminating the use of an image file to
signify approval.

To test you should have some tags in each approval state: pending,
approved, and rejected.

- Apply the patch and go to Tools -> Tags.
- Confirm that the status of each tag is clearly shown with a text
  label.

Works as expected (Do not forget to set filter at the left to 'all' for testing)
Signed-off-by: Marc Véron <veron@veron.ch>
Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>
Signed-off-by: Brendan Gallagher brendan@bywatersolutions.com