[session] promote usage of [deny|all]_all_hooks_but session methods rather than hooks_control context manager directly

[web app] move set of status_out into validation_error_handler to ease readability

[workflow test] don't use session.user, subject to internal changes

[db creation test] more testing of db initialization: call build_db_cache and ensure admin user exists

[source synchronization hooks] Fix/enhance system source hooks They are broken if launched during repository initialization (this was not the case yet, but will be soon...). Add additional checks to ensure one doesn't try to store system source config in the database, as it will be ignored in favor of the "sources" file.

[validation error] refactor validation error handling so translation is done on the web side Users should now use cubicweb.validation_error helper function that will activate the feature with other handy behaviours. Also test testing for message in errors should call exception.tr(unicode) before comparing. Using bare ValidationError keep backward compat.

[repo cleanup] drop code moved to querier by 7e264ce34cd4

[repo cleanup] drop code moved to querier by 7e264ce34cd4

Added tag cubicweb-debian-version-3.15.4-1 for changeset 70cb36c826df

Added tag cubicweb-version-3.15.4 for changeset 63260486de89

[facets] add link 'focus on selection' (closes #525277)

[server/utils] catch ValueError from password verification passlib can raise ValueError when it can't recognized a hash. Treat that as a wrong password.

[test] reindent and use request() rather than bare session this avoid error due to implementation details of session

[repo] fix debug code in DBG_REPO mode (closes #2469942)

[datafeed] properly call hooks for inlined relations on entity creation. Closes #2481156

[sources/native] automatically update passwords using deprecated hashes on login Closes #2465904

[repo pyro] fix previous commit: should not import Pyro in remoterql module/base class, it may be missing

massive copyright update to avoid clutering later patches

minor cleanups/typos

[session / querier] reorganize code to building result set descriptions

[web] search state doesn't need cnx, remove useless test

[schema] rename schema permissions function: session may also be a request, use _cw

[repo initialisation] during repo creation, load all hooks and entities code this simplify code and make it more consistent

[request/session] refactor language handling: don't attempt to sync web/repo languages This decouple thing and make code easier to understand. Previous behaviour was fine w/ validation error that were translated on the server side, but isn't satisfying for notification and all. Now: * translations should be done on the ui side (see previous validation error refactoring) * consistent behaviour: each side (web/repo) is responsible to deal with its request/session of language, no weird interaction between them on this topic * drop on the way the 'session properties' api, used only for that matter. -> much simpler/cleaner/saner api The thing missing being a way for user to tell "My favorite language is xxx but I also want cw to consider my http language header)

[config] turn internal configuration methods building appobjects search path into normal method rather than class method as this is useless and make path filters difficult to override (we had to override the class attribute, as instance attributes were not seen). Also rename related methods for consistency with current vocabulary

fix missing import

backport stable

[hooks/syncshema] fix logging level and nicer message (wrong changeset published previously)

[hooks/syncschema] do not crash on DROP of an already dropped index/... (closes #2465393)

[cwctl] show a better diagnostic message on version violation (closes #2464800)