Bug 16538: Improve the style of progress bars

Bug 16538: Improve the style of progress bars

This patch updates the style of progress bars to make them a little
nicer. Progress bars in the staff client are not built in a consisten
way. Some have been updated to use the <progress> element and some have
not. This patch improves some styling common to both kinds.

Other changes:

- Redundant in-page CSS has been removed from many pages.
- An invalid "min" attribute has been removed from several instances of
  <progress>.
- Corrected capitalization.
- Fixed incorrectly quoted attributes.
- Added missing form "action" attributes.

To test, clear your browser cache if necessary. Apply the patch and
test uploads on the following pages:

- Circulation -> Offline circulation file upload
- Tools -> Batch item modification
- Tools -> Batch record modification
- Tools -> Stage MARC records for import
- Tools -> Manage staged MARC records
- Tools -> Upload local cover image
- Tools -> Upload

In all cases, progress bars should look improved and work correctly.

Test Tools -> Batch item deletion. Unused background job handling markup
has been removed. Deletion processing should work correctly.

Signed-off-by: Hector Castro <hector.hecaxmmx@gmail.com>
Works as advertised

Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>
Signed-off-by: Kyle M Hall <kyle@bywatersolutions.com>
(cherry picked from commit 65b2da08c9edaa6d2afe83ca7a5b72000128ecbe)
Signed-off-by: Frédéric Demians <f.demians@tamil.fr>