Please check that I've kept the correct references to ownCloud. I've changed all references, except owncloud.db, as I believe we're still using owncloud.db as the database file name.
Replaced ownCloud references with Nextcloud
Replaced suggestion to use OBS packages with Snap package (as this page is about using packages)
I left occ as occ for the moment until we presumably eventually replace it with ncc when we later allow breaking OC compatibility (or symlink occ to ncc)
Removed reference to disabling third party apps, as I believe NC does this automatically now, but left the reference to re-enabling them as we don't yet do that (if I remember correctly)
I left the reference to the ownCloud status screen as a reminder to update the screenshot to nextcloud.
Updated tagline, description so it references a single code version with optional enterprise support and the links to the clients. This will need to be updated when we have a Nextcloud desktop client of our own. The iOS link is not yet a live page, but I plan to add it in a separate commit in the same PR.
Changed description to match that there are no longer Enterprise vs Free versions in Nextcloud, but Enterprise Support subscriptions Replaced doc.owncloud.org links with docs.nextcloud.org ones. Removed references to ownClouders Youtube channel as there doesn't seem to be a Nextcloud equivalent (because we're using the Nextcloud official channel for everything?) Not sure if we want to set up a "Nextclouders" YouTube channel or not. All links are active, except the iOS one, which still needs to be created.
Mailing list replaced with forums, and IRC channels replaced with the ones for Nextcloud (that I know of). There doesn't seem to be a nextcloud-testing as there was an owncloud-testing. I can add tihs in if there are plans to use it.
