Bug 25133: (follow-up) Move changes to timepicker.inc

Bug 25133: (follow-up) Move changes to timepicker.inc

Witht the changes in calendar.inc there can be a js error where the timepicker is not
included. Moving the changes to timepicker.inc should resolve this

Note: in previous patches the amnames/pmnames were removed. It is possible they had
no effect because they were declared in two files, so I have left them in timepicker.inc

Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>
Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>