isLettered is more accurated to accounting terms and easy to understand.

   The Payment Transaction should be created once the user attempt to pay, and not on every Payment Transaction.

    The implementation shouldn't rely on the existence of Payment Transaction for knowing if the Sale Invoice Transaction is payed or not.

See merge request nexedi/slapos.core!460

See merge request nexedi/slapos.core!461

See merge request nexedi/slapos.core!458

Capture either stdout, stderr or both separately using select.poll
to handle timeouts and multiplex the reads in the current thread.

In Python 3, a separate thread is not needed to log output in realtime.
See discussion in !319 for more details.

This partly reverts commit 86ce8b8e.

See merge request nexedi/slapos.core!456

   This change is required to overwrite (remove) roles from Query portal type, since by default it may contains an role from erp5_base bt5.

It is not used

It does not seem used.

See merge request nexedi/slapos.core!457

Base_acceptContractInvitation is an infinite loop

  This business template isnt used for severl years, and dont contains compatible code.

See merge request !454