cach user folder for file search results

Properly add trailing slash to mount point

Do not try to make user subadmin of group twice

Fixes resolving mount points when shared mount point's target name has
the same prefix as the source name

If the provisioning api is used to make a user subadmin of a group that user
is already a subadmin just return success.

Added unit test to ensure things keep working.

Prevent php message: "Trying to get property of non-object at /xxx/lib/p...

Properly import used classes

Initial fix for #15494

Add "Reply-To" support for sharing mails as well as refactor code and add unit-tests

fix wrong typeface being used for some buttons

update icewind/smb to 1.0.0

[autotest.sh] use the DATABASEHOST for the mysql DB drop

Move console application to it's own class - allows reuse in the web shell

add unit test for crypt.php

Fix UrlGenerator::imagePath() for app paths

Dont hide exceptions master

Fix master unit test: Clear leftover shares from other tests 

block cron when in single user mode

Catch more exceptions in DAV client

Added InvalidArgumentException to catch HTML parsing errors when XML was
expected.
Made convertSabreException more generic to be able to handle more
exception cases.

fix share input loading spinner, fix #15522

fixing #15396 & #15397