This reverts commit 7c85889c1f94eadcbcf21675aec5d576b77ba781, reversing
changes made to ab134807eae53b303fe8bb054ec5808543fa9624.
Reason: Messed up and accidentally merged a pull request.
- Joplin Server: Adds support for sharing a notebook
- Desktop: Adds support for sharing a notebook with Joplin Server
- Mobile: Adds support for reading and writing to a shared notebook (not possible to share a notebook)
- Cli: Adds support for reading and writing to a shared notebook (not possible to share a notebook)