[facet html] Add surrounding div with "facetBody" class to "has_text" facet.
This makes its html structure consistent with the other facets
and fixes both css and a javascript behaviour (hide the facet body
when clicking on its title).
Closes #3797501.
[serverctl] fix default value for db-init config-level
Otherwise cubicweb-ctl db-init --automatic complains that "--automatic
and --config-level should not be used together" when they weren't.
Closes #3984336