[test] fix datafeed test, we have to use an internal session

[test] drop some deprecation warnings

[ibreadcrumbs] missing xml_escape on latest path part (usually view's title). Closes #2037506

[test] fix test failure caused by 7922:d307c3817782

[test] fix regression introduced in 7915:a7f3245e1728 leading to test's postcreate not being executed anymore

[entity] restrict creation form field vocabulary using __linkto information (closes #1799997)

Add generated documentation to .hgignore.

[uilib] add missing printer for integers

backport stable

[rset] don't only consider a sample select node / solution to compute rset description. Closes #2036499 those particular ones may miss information that we may found in another select or solution

[rset] use .iteritems() instead of items()

merge back stable change

remove stale debugging statement

[server] fix integrity checks that destroy data (closes #1972842)

[entity related rql] 'is' relation target constant should have 'etype' type, not String

[entity] fix dumb name error introduced by 3.14 entity refactoring

backport stable

[js] missing trailing comma

[test] map pgettext to unicode as _

[table view] fix bug introduced in 7938:80c6e2155c3d leading to not translated table headers

oops

[test] fix some failures recently introduced

add missing imports

[selectors] match_kwargs and match_form_params selectors both accept a new `once_is_enough` argument (closes #1990438) also fix docstring of match_exception and references to selectors in the book.

[cache] replace lgc.cache with something more appropriate (closes #1921713)

merge and fix cubicwebSortValueExtraction pb which disappeared when tablesorter.js has been updated

[table] use explicit add_onload() to setup table sorting (closes #2013493)

[schema display] display_name shouldn't call .lower(). Note the only proper way is to have different msgid for upper/lower cases. Closes #1105433