use class_regid / classid functions

should be __call__

merge

rewrite hooks in sobjects as new Hook style into hooks sub-package

[hooks] deprecates hookhelper module

imports cleanup

backport stable branch

B [cwctl] fix db-{dump,copy,restore} commands

[registry] fix registration logging messages

[hooks] major refactoring: * they are no "proper" appobject, selected when an event is fired according to its context * new module cubicweb.server.hook containing the Hook class and Operation class * deprecated SystemHook and PreCommitOperation classes * rewrite core server hooks as appobjects in the cubicweb/hooks directory -> deprecates hooksmanager, remove hooks, schemahooks, securityhooks cubicweb.server sub-modules -> new cubicweb.hooks sub-package -> get back to a (somewhat) working state

[vreg appobject] use class_regid

[selectors] explicity fail on inplace and/or

[rset] better explanation, refactor try except

quick and dirty fix until introduction of CWEntityManager

remove 3.2 bw compat code

turn id into __id__

remove old bw compat code

remove 3.2 bw compat code

no more supported, can remove the test

doc update

better as a method of the etypes registry

backported from appobject

deprecate appobject.vreg and rename appobject instance attributes using cw_ prefix

no need for a classid class method

rename registered to __registered__

remove more 3.2 deprecated code, reintroduce checkbox used by formrenderers

propagate some api changes

entity has no more tal_render method

access schema through req.vreg

merge