[cleanup]

[repo] optimize massive insertion/deletion by using the new set_operation function Idea is that on massive insertion, cost of handling the list of operation become non negligeable, so we should minimize the number of operations in that list. The set_operation function ease usage of operation associated to data in session.transaction_data, and we only add the operation when data set isn't initialized yet, else we simply add data to the set. The operation then simply process accumulated data.

[repo] make etype which should go in deleted_entities configurable: we only need this for types imported from other multi-sources instances

[repo] don't execute child step twice in EntitiesDeleteStep

[form] consider autoform_field_kwargs for meta fields; allow required customization

[workflow] support for automatic transition starting from the initial state

[testlib] create_user support extra kwargs to give to create_entity(CWUser)

fix dataimport for 3.7.2

use lgc.testlib.TestCase

backport stable

Added tag cubicweb-debian-version-3.7.2-1 for changeset 8fda29a6c219

Added tag cubicweb-version-3.7.2 for changeset d010f749c21d

take care to empty string in cubes search path

backport stable

[ms] fix name error introduced by rql 0.26 api update

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