handle attribute selection on variable selected using MAX()

don't use internal address

added some assertion on expected hooks class attributes

rewrite test schema using a single schema file

[formwidgets] ensure textarea for richstring has not ridicuously small size (close #344547)

oops

[tests] make tests conform to new input/text size and manxlength

[reledit] there is nothing to escape, also cleanup lzone for attributes

[formfields] set a reasonable minimal minimum length to input/text, also set the max length if applicable (closes #344538)

[tests] needs repair

do nothing if the clicked facet has facetValueDisabled class; do not move facet when cubicweb:idx == 0

merge

optimize rql for ETypeFacet possible_values

merge

call postAjaxLoad in reloadComponent; add corners only on reloaded elements

select right possible_values for ETypeFacet

[reledit] left in by accident

[reledit] fix reload type (was a string), use simple clicks instead of doubles

[reledit] reload support for relations

[reledit] landing zone useful only for relations; cleanup

[reledit] try to be smart at getting a good default vid for relations, factor computing cardinality from reledit and formfields

[reledit] do not strip values (we should not make judgements about field contents ...)

[reledit] have a link-free landing zone for mouse-clicks (closes #343544)

[reledit] small cleanup and add escape param to control xml_escapability of the value, also rename vid arg which clashes with entity.view(...) args