Make Collabora part of main Stackspin
We have several production clusters now running the Collabora app for Nextcloud. This works well apparently, but it gives us some extra maintenance work to manually ensure that they don't break on Stackspin/Nextcloud upgrades, and update the overrides files for all those clusters if necessary. It would be nice if Collabora was part of Stackspin default, even if it's not installed by default, so we can keep the Collabora Nextcloud app in sync.
We might even want to switch from ONLYOFFICE to Collabora completely, but that's possibly a much bigger task, especially if we want to give people the option to run the Collabora server themselves, besides the single multi-tenant server that we already have.