[warnings] explicitly ask to show DeprecationWarning in debug mode (closes #1942760) as python 2.7 don't show DeprecationWarning by default

[testlib] make self.view() return raw output if no validator is used This will make it possible to parse and test view's output even if no validator is associated to the view's content type.

[tabs] do not use an ajax call to set cookie value, use jquery.cookie helper instead (closes #1944522)

[tabs] fix clic on tab that does nothing (closes #1942750) (there was an area around the text that would trigger the tab switch but not load the tab content)

[idownloadable] dtw and up copyright

[test] fix test broken by 7815:2a164a9cf81c

[entity doc] fix typo (rest_var instead of rest_attr) and cleanup doc

[exceptions] stop catching any exception in various places (closes #1942716)

[tableview] fix view selection when value is None (closes #1936781) * in case of None on final view, use explicitly asked view anyway * when etype is None, that means it's a non final entity type

[book] merge pyro chapter with faq entry with connexion snippet

i18n update

[schema view] fix label/name inversion leading to wrong css class / group url depending on user's language

[i18n] tweaks

[i18n] cleanup messages moved to localperms cube

[security view] slight changes to make things clearer

backport stable

[refactoring] introduce add_etype_button function to properly create button to add a new entity also properly use cw_create_url to generate the URL to add the entity

[user prefs] use same title as the action for consistency

[sources management] properly set __linkto, closes #1922970 when clicking on 'add mapping part' on an external source view, one expect to have source properly selected in form

some minor cleanups

[web test] fix test broken by new users/groups management views

[table view] allow to set None in 'headers', meaning the label should be fetched from the result set as done by default (closes #1931533) the point of this is to avoid having to define the whole headers list when only some of them have to be defined.

[user management] users and groups management now really lead to that (closes #1931478) ie, one tab for users, another for groups. By default the groups tab simply list existing groups (with the number of users they count), and propose to create a new group.

[css] use h* title properties from uiprops in cubicweb.old.css (closes #1931476) + minor cleanup of cubicweb.css

[entity fetchattrs] also fetch ambiguous rtypes even if we do not recurse on them (closes #1720823)

backport stable

[jquery] upgrade to jquery 1.6.4

[test] fix some tests broken since localperms cube extraction

refactor entity fetch_rql method to use a RQL syntax tree instead of RQL strings ; closes #1585650

[doc] add some documentation in cubicweb.web.action