[migration] add rollback when replace_eid_sequence_with_eid_numrange fails
If we get here, the current transaction is aborted, so if we are to
assume everything is fine and continue we need to rollback first.
Edition control
===============
This chapter covers the editing capabilities of |cubicweb|. It
explains html Form construction, the Edit Controller and their
interactions.
.. toctree::
:maxdepth: 2
form
dissection
editcontroller
examples