XWIKI-9740 : Categories field updates (check / uncheck) are not taken into account after adding a new category when editing a blog post
Merge branch 'master' of https://github.com/xwiki/xwiki-platform
Merge branch 'master' of https://github.com/xwiki/xwiki-platform
Merge branch 'master' of https://github.com/xwiki/xwiki-platform
XWIKI-9740 : Categories field updates (check / uncheck) are not taken into account after adding a new category when editing a blog post
- fixing escaping problem that breaks a xwiki-enteprise-test-escaping test
- also making sure that unchecked categories remain unchecked in a blog post when editing it and adding a new category