Allow to reset to draft rejected and approved complaints

There is nothing that justify to prevent such transition.

assigned to @ced

added sales type::feature + 1 deleted label

added 1 deleted label and removed 1 deleted label

review283241004 updated at https://codereview.tryton.org/283241004/#ps285121002

review283241004 updated at https://codereview.tryton.org/283241004/#ps261331003

New changeset 22dfe7aa3288 by Cédric Krier in branch 'default':
Allow to reset to draft approved and rejected complaint
https://hg.tryton.org/modules/sale_complaint/rev/22dfe7aa3288

added 1 deleted label and removed 1 deleted label

closed

New changeset 6502cf297643 by Cédric Krier in branch 'default':
Allow to reset to draft approved and rejected complaint
https://hg.tryton.org/tryton-env/rev/6502cf297643