Bug 28386: Remove _others_ from the contributor list

Bug 28386: Remove _others_ from the contributor list

We arbitrarily use "_others_" for unknown contributors (biblibre,
bywater, ptfs-e teams, etc)

Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>
(cherry picked from commit 6a403dec40fd89f08d9fcb478e27e5fb23ec6d73)
Signed-off-by: Fridolin Somers <fridolin.somers@biblibre.com>
(cherry picked from commit 491fd697ee0c91b503aef5c890219b9a8ed4a901)
Signed-off-by: Victor Grousset/tuxayo <victor@tuxayo.net>
(cherry picked from commit 3f12333353b45fa427ed72cf34eb801d079131a9)
Signed-off-by: Wainui Witika-Park <wainuiwitikapark@catalyst.net.nz>
(cherry picked from commit 3f12333353b45fa427ed72cf34eb801d079131a9)