Manage errors during non-interactive operations

From https://discuss.tryton.org/t/improve-processing-errors/3723/6

assigned to @ced

added trytond type::feature + 1 deleted label

added 1 deleted label and removed 1 deleted label

New review346781002 at https://codereview.tryton.org/346781002/#ps371531002

review346781002 updated at https://codereview.tryton.org/346781002/#ps363711002

review346781002 updated at https://codereview.tryton.org/346781002/#ps367401002

New changeset f6b0d437b5b6 by Cédric Krier in branch 'default':
Manage errors during non-interactive operations
https://hg.tryton.org/trytond/rev/f6b0d437b5b6

added 1 deleted label and removed 1 deleted label

closed

New changeset fcc99fbdf34e by Cédric Krier in branch 'default':
Manage errors during non-interactive operations
https://hg.tryton.org/tryton-env/rev/fcc99fbdf34e