[web] Allow propagating 'klass' parameter on tree views recursively Closes #4881302

[utils] Fix define_var in ajax context (closes #4881301) Use namespaced <cubicweb:script> instead of just <script>

[web/data] Never hide JS errors in our Deferred implementation Modern browsers have good debugging tools, let exceptions go all the way up. This only affects exceptions raised in the js code, if there's an issue on the server/python side, they'll keep going through our error callbacks. Closes #4881300

[web/data] Fix userCallbackThenUpdateUI to completely replace old DOM elements Without the 'swap' parameter, userCallbackThenUpdateUI() would replace the _children_ of the component with a new version of the componenent, thus creating nested divs/spans/buttons/etc. Closes #4881299

[web/views] Stop mishandling the fieldset name in the default form renderer While not really documented, it is generally assumed that: * the fieldset is a user-visible string (much like a title), * it will be translated by whichever piece of code uses it. So: * fix AutomaticEntityForm to generate untranslated fieldset names, * fix FormRenderer to properly translate the fieldset name before rendering it, * stop using the field set (which may contain whitespace) as a CSS class name (the feature was unusable, so just drop it), * properly handle the colon as part of the translated fieldset name Closes #4881298

Added tag cubicweb-version-3.20.2, cubicweb-debian-version-3.20.2-1, cubicweb-centos-version-3.20.2-1 for changeset 138464fc1c33

merge 3.19.8 into 3.20 branch

[pkg] fix mistake in c7b218125c25 We ended up with the wrong filenames

Added tag cubicweb-version-3.19.8, cubicweb-debian-version-3.19.8-1, cubicweb-centos-version-3.19.8-1 for changeset efc8645ece43

[server/test] convert new test to 3.19 API