* ref #22784

Fix share mounting recursion

Fix migration of group shared calendars and addressbooks

Delete empty file

don't hide server not available exception, fixes #20536

Show version to update to properly

Cleanup OCS Share Api

Remove double URL encoding

Initialize submodules for Scrutinizer as well

Scrutinizer otherwise complains about the fact that some classes are undefined etc.

Let's see whether that works 

ZipStreamer as bundled with 9.0 will properly encode the filename already.

Fixes https://github.com/owncloud/core/issues/22836#issuecomment-193336245

improve log output when no LDAP user was found on login attempt

Handle calendar migration issue by writing the faulty event to the lo…

The code to get a share by id is somewhat messy. And was duplicated.
Now this is done is a separate function

Fix call to disk_free_space when a file is provided

Fix archive file name when downloading public share

Fix uploading to fed share when free space is unlimited

Update error text for link passwords

Trigger login if remember_login checked

Add locking to the node api

Fix tooltip for versions mtime

Return false on 401 in file list + trash file list

Correctly default to null and add type hint

Make sure that the return value is an array

For 9.0 we don't have the possibility to store calendar and addressbo…

When no files were specified for download, it means folder download.
In this case, no need to pass an empty "files" argument.

When download a public link share folder using the button on the top
right, it doesn't provide a list of files.

This fix makes sure to trigger the correct logic when no file list was
given.

In the case of shared files, we have to call free_space() on the file
name. This has the side-effect that when uploading to a local storage
without quota set, it will call disk_free_space with the file name,
which fails.

This fix uses the parent folder in case the given path is a file.

A federated share can report unlimited quota as -3, so the
ajax/upload.php code needs to be adjusted to block uploads when the free
space is unlimited.