In AEM richtext component, you can add HTML but scripts are not allowed as soon as you save, it will remove script tags. Its due to security rules in CORS configuration that can be update not sure if it will still allow scripting tags though.embed is an option to be considered if CSS and JS required...

you dont have to cancel the translation job, if you go to page from translation project, once selected you can get the option accept or reject the translation. You should reject it instead of canceling and deleting manually. Rejection will allow to you have translations import again and again until ...

there are two option either you create language copies for translations project then its useful to send out a package to translation agencies. This will create translation project per language for selected pages. It will give you option to export the package for human translation to send to agencies...

Overlay  node in your project /libs/wcm/core/content/sites/jcr:content/actions/selection to overlay copy the above from libs to under /apps/wcm/core/contentRemove the publish node under this node and this will remove the publish button. There are other action buttons you can remove if you wish to cu...

Updated links as post one is obsolete or broken.ACLProvider (Apache Jackrabbit 2.6.9 API)

it works fine only if you dont forget to clean after making changes ;)