[schema] add CubicWebRelationDefinitionSchema Stop monkeypatching yams, inherit from RelationDefinitionSchema instead.

[schema] Let RQLConstraint inherit from BaseRQLConstraint instead of RQLVocabularyConstraint There is apparently no reason for RQLConstraint to inherit from RQLVocabularyConstraint as it gets its `repo_check` method from `RepoEnforcedRQLConstraintMixIn` and RQLVocabularyConstraint (which inherits from BaseRQLConstraint) actually only overrides that method. So simplify inheritance by removing a useless level of indirection. Adjust cw_unrelated_rql accordingly, where it was that RQLConstraint inherited from RQLVocabularyConstraint.

[server] unormalize source logger's name to avoid encoding errors

[entities] parameters should be given to fire_transition, else they are simply ignored

[entity] set _cw_adapters_cache in __init__ rather than on first use

fix typos and indentation in docstrings/docs

session.id → session.sessionid

[test] test page_size problem (related to #8123231)

[predicates] guard against non-integer page_size form parameter Closes #8123231

[server/test] add test for db-dump command

[server] fix db-dump with sqlite 'gzip -c dbname > backupfile' needs to go through the shell.

[serverctl] fix db-dump Since changeset af47954c1015 we would die with: AttributeError: 'ServerMigrationHelper' object has no attribute 'repo'

[server/test] sorting vs dict vs python3

[devtools] more sorted() vs dict vs python3

[web/application] return bytes from redirect_handler and validation_error_handler

[devtools] fix ResourceWarning: unclosed file tmpdb-__default_empty_db__.config

[serverconfig] fix ResourceWarning: unclosed file bootstrap_cubes

Use cubicweb._

[syncschema] hashlib.md5() wants bytes

[server/test] use next() builtin instead of next() method

[server/test] dict.iterkeys

[syncschema] don't arbitrarily remove constraints from the in-memory schema For some constraint types, it may make sense to have several constraints of that type simultaneously. In such a case, removing one of them from the in-memory schema is wrong. Closes #7446353

[server/test] don't leak timeout from one test class to the next Reset SQL_CONNECT_HOOKS after we're done with this test class so the next one doesn't inherit a timeout it doesn't want.

[server/test] CWAttribute.extra_props is Bytes

[dataimport] give unicode objects to psycopg2 copy_from

[dataimport] extid must be a bytes object

[dataimport] import StringIO from io

[dataimport] fix ucsvreader for python3 The csv module in python3 wants str, so use a StreamReader to feed csv.reader and don't decode the output

[server/test] import StringIO from io on python3 Don't change the import for python2, as we print a mix of unicode and str.

[server/datafeed] drop URLLibResponseAdapter.info I don't know where it's used