[js] remove 3.9 bw compat (where apparently unused)
- cubicweb.ajax.js
- loadxhtml: form.callback support removal
- removal of top-level functions: preprocessAjaxLoad, reloadBox,
replacePageChunk, loadxhtml
- cubicweb.compat.js:
- map is undeprecated (jquery.map being not an acceptable
replacement)
- removal of noop, contains, findValue, filter, addElementClass,
removeElementClass, hasElementClass, KEYS mapping
- htmlhelpers.js: use non-deprecated functions cw.urlEncode
- cubicweb.js:
- removal of startsWith and endsWith monkeypatches
- note deprecated but still used stuff (for action)
- test_utils.js: use cw.utils.sliceList instead of global function
Closes #2782004.
usr/lib/PY_VERSION/*-packages/cubicweb/server/
usr/lib/PY_VERSION/*-packages/cubicweb/hooks/
usr/lib/PY_VERSION/*-packages/cubicweb/sobjects/
usr/lib/PY_VERSION/*-packages/cubicweb/schemas/
usr/share/cubicweb/migration/