New NextCloudPi image, please share

Hi everyone.

I released a new image, with all the issues that arose from the migration to Stretch fixed and also some new stuff.

There’s people that don’t update before starting installing things, so I think this image will be a good long term candidate, and we can wait longer until the next release, still providing new stuff via remote updates.

Please, stop sharing the old one and get the new one.

Also, now we have an automatically generated changelog