refactor so that rql rewriter may be used outside the server. Enhance it to be usable for RRQLExpression as well

[ms] fix planning w/ query using identity

[querier] fix sql generated w/ NOT relation and shared variable: ensure variable's table is in parent select'scope

[cleanup] remove unused imports

add note

fix when Interval is coming from date substraction

remerge

merge

[controllers] allow onsuccess / onfailure callback to be passed to validateform For instance : validateform?__onsuccess=wp.addAndSelectHall will call the addAndSelectHall function on success rather than redirecting to a specific URL.

[utils] provide a class to extend the default simplejson encoder to be able to dump standard yams attribute types

backport 3.5

test update

[actions] refactor: extract actual_actions from fill_menu to work with table filter form

test fix