[web/ajax] don't override any status code with 500 in ajax_error_handler If the request produced an error such as Unauthorized or NotFound, core_handle sets an appropriate status_out. Which is then overridden by the ajax error handler.

[web] Add asserts to the raw header conversion functions This API is terrible, but at least this might help us catch some errors in our conversion definitions.

[view] Delete dead(?) code from ReloadableMixIn Nothing seems to ever call user_callback on the Component, only on the request. Related to #3567793

Add a db-statement-timeout option for postgresql sources Use that new option to set the statement_timeout option when creating connections, except for maintenance operations (shell and upgrade). Closes #2547026

[test] use assertNotIsInstance instead of assert_(not isinstance(...))

[services] register_user now returns the new CWUser Closes #3804444

[server/session] remove json dumps around call_service This backouts changeset b151beea9cb6. With call_service being in-process and synchronous, there's no RPC use case.

[req.find] Use vreg.schema.eschema for eschema lookup If an etype is non-existant, using vreg.schema[etype] raises a confusing error complaining about a non-existing relation. This is because of the implementation of vreg.schema.__getitem__ that look first in entities and then in relations. Using directly vreg.schema.eschema restrict the lookup to etypes only, hence raises a meaningful error when the etype does not exist.

[doc] Typo

[formfields] Handle 'placeholder' attribute for text and textarea See #636930. Closes #3406713.