Release v3.28.0-beta.2 (#2092)

Improvements for Windows and macOS users:

• After the remote Cozy has been found unreachable because of a network error
  such as a interface change, the subsequent requests won't fail anymore with
  the same error once a stable connection is back.

Improvements for Windows users:

• Documents that had been previously found incompatible with the local
  filesystem because of the previous path length limit will be updated to take
  the new limit into account. Most of them should thus become compatible.
• Synchronization error messages displayed in the main window will now only
  contain the name of the document involved instead of its complete path.

See also known issues.

Happy syncing!