Bug 28932: Fix duplicate next_action & prev_action

Bug 28932: Fix duplicate next_action & prev_action

This patch fixes the duplicate buttons issue.
To test:
1. Apply the regression tests patch
2. Run:
   $ kshell
  k$ prove t/db_dependent/Illrequests.t
=> FAIL: Tests fail
3. Apply this patch
4. Repeat 2
=> SUCCESS: Tests pass

Signed-off-by: Tomas Cohen Arazi <tomascohen@theke.io>
Signed-off-by: Fridolin Somers <fridolin.somers@biblibre.com>
Signed-off-by: Kyle M Hall <kyle@bywatersolutions.com>
(cherry picked from commit 692804a49a59208b6726f48523bfb82e73671ddc)

Signed-off-by: Andrew Fuerste-Henry <andrew@bywatersolutions.com>
(cherry picked from commit 0b9c338f581fc562c94e8f1122b6d5b9bfc715e3)
Signed-off-by: Victor Grousset/tuxayo <victor@tuxayo.net>