Thank you for the updated translations.
Please feel free to develop any VuFind documentation you wish. If you share links to this documentation, I can reference it in the VuFind wiki.
Regarding the context of “All” within the translations, this is used in a drop-down for filtering search results within the tag management module. The drop down allows the user to either filter to tags from a specific user, or to see tags from all users. I can send a screen shot if this is still unclear.