[uilib] `uilib.js` helper now honors explicit JSString (closes #4959538) Previously, if a JSString was inside a nested container (i.e. list or dict), it was handled as a string, not a verbatim js chunk (see docstring and test). So the following code:: >>> str(js.cw.pouet(1, {'callback': JSString('cw.mycallback')}) resulted in:: "cw.pouet(1, {'callback': 'cw.mycallback')})" while we expect (note the removed quotes):: "cw.pouet(1, {'callback': cw.mycallback)})" We use ``cubiweb.utils.js_dumps`` instead of ``cubicweb.utils.json_dumps`` which is aware of JSString.

[dbapi] remove the dbapi module and its immediate remaining users We suppress toolsutils.config_connect, which has currently only one known user (the email cube), which is being patched. It can be replaced with utils.admincnx function for a local access. Next will come a series to: * remove the session backward compatibility * fold ClientConnection into Connection Closes #3933480.

[web/views] remove dbapi usage from 'gc' view