Disable next/previous of tab according to the record position

This will improve the user experience and it is needed for #1639 (closed).

assigned to @ced

added sao tryton type::feature + 1 deleted label

added 1 deleted label and removed 1 deleted label

New review388061002 at https://codereview.tryton.org/388061002/#ps370991002

New changeset b426134f663b by Cédric Krier in branch 'default':
Disable next/previous buttons depending on the record position
https://hg.tryton.org/sao/rev/b426134f663b

added 1 deleted label and removed 1 deleted label

closed

New changeset 6cb3b508c1c8 by Cédric Krier in branch 'default':
Disable next/previous buttons depending on the record position
https://hg.tryton.org/tryton/rev/6cb3b508c1c8

New changeset f3bb43cf3dcb by Cédric Krier in branch 'default':
Disable next/previous buttons depending on the record position
https://hg.tryton.org/tryton-env/rev/f3bb43cf3dcb

mentioned in issue #11352 (closed)

mentioned in issue #11413 (closed)