This allow the sync engine to query the new metadata and update the
overlay icons.
Note: we also need to invalidate the etags because the server does not
change the etag of parent directories that see their share-types changed.
Issue #6098
* Allow creating nameless shares
* Display token as name for nameless shares
(both to be consistent with server)
* Allow changing a share's name by editing it in the table
* Minor adjustments
Starting from oC 10.0.0 having several public link shares with
different attributes for a path will be supported. This adds
functionality to create, edit and delete these public link shares.
The behavior is currently gated by server version, but should be
adapted to use a capability as soon as one is introduced, see
owncloud/core#27622.
The UI reduces to a single-share version when talking to older servers.
Testing scenarios:
* Link sharing is disabled (by capability, not by theme)
* Required passwords
* Required expiry
* Forbidden 'allow upload' for folders
* New and old servers
- Replace functions that are provided by MinGW with a Win32-based
implementation
- Explicitly export needed symbols from ocsync.dll
- Rename share.h to sharemanager.h since the name clashes with one
of the Windows headers and get included from there
- Remove the timestamp from the fallback csync stderr logging, it's
not used since we always provide a log callback
