[change state form] set domid to avoid data conflict with other (eg edition) form

[action] set mainform=False to ensure we don't consume previously posted form validation errors

[forms] remove some deprecation warnings

backport stable

update note

[shell, testlib] return doc test results in process_script and new assertDocTestFile method on CubicWebTC

[migration] fix rqliter when some query arguments are given

[uilib] soup2xhtml uses now lxml.html.Cleaner The lxm cleaner class let you configure more easily the allowed tag elements in parsed content. Caveats: - attributes in elements are not dropped (and html layout can be broken if css classes are reused) - root tag element in snippet is buggy

minor cleanups

fix #724689: exception's display during ajax call

test and fix #1232202: [bookmarks] broken link for startupviews

fix #1376317: facet: no_relation feature crash when rql has no restriction

[web session] fix '#1375582: sometime have to relogin since secure session cookie are used' by having different session cookie for http/https version. Also add application name to avoid potential pb when developping differents appls on the same port.

[migration] use eschema.type for nicer display when confirmation is asked

[base template header] changeset 6669:e4532c6acf34 introduce a visual regression on standard site, fix it by merging header-left/header-center context, it simplify things and have proper display. Cubes using 'firstcolumn' css class will have to be upgraded