Bug 11713 - Use new DataTables include in course reserves templates

Bug 11713 - Use new DataTables include in course reserves templates

This patch modifies two course reserves templates to use the new
DataTables include. This simplifies the inclusion of assets and updates
to the latest DataTables version. Also included:

- Adds a sorting filter on the course reserves detail table to excluding
  articles from sorting.
- Corrects the styling of toolbar buttons (buttons should have btn and
  btn-small classes).

To test you must have UseCourseReserves enabled and have multiple
existing courses, at least one of which should have items on reserve.

1. View the list of courses. Table sorting should work correctly. The
   "new course" button should look consistent with other staff client
   toolbar buttons.

2. View the list of reserves on a course.
   - Toolbar buttons should look consistent with other staff client
     toolbar buttons.
   - Sorting should work correctly, excluding sorting on the Edit,
     Remove, and "Other course reserves" columns.
   - Titles on reserve which begin with an article should be sorted
     correctly with article excluded
   - Test sorting with item-level_itypes on and off.
   - Test sorting using a patron whose permissions include various
     combinations of add_reserves and delete_reserves

Signed-off-by: Kyle M Hall <kyle@bywatersolutions.com>
Signed-off-by: Jonathan Druart <jonathan.druart@biblibre.com>
Signed-off-by: Galen Charlton <gmc@esilibrary.com>