Release v3.26.1-beta.1 (#2054)

Improvements for all users:

• The mechanism we introduced in the last version to resolve conflicts from the
  synchronization process when we've run out of options was assuming that the
  current date of the computer would always be greater than the last
  modification date of the document being renamed on the remote Cozy.
  Since this is not always the case and the remote Cozy will refuse the renaming
  in those situations, we'll use the same workaround than for the other requests
  and send the most recent date between the current local date and the last
  modification date of the remote document.

See also known issues.

Happy syncing!