Seems like Apache is inconsistent fun between versions. Let's remove it thus for now.

Use setifempty to please incompatible httpd versions

Some httpd versions have problem with the old logic leading to resourced served with multiple headers.

Router error handling + Base.php

Remove all cache avatars on avatar deletion

- Some functions are entirely broken
- PHPDoc etc...

Fixes #21513

Since we cache the generated avatars. We should also delete the
generated sizes when we remove the avatar.

Cleanup OC_DB methods

Do not rewrite letsencrypt .well-known URI

Added new capabilities test with changes in server configuration

Issue 20218 min max owncloud version warning

Allow searching apps by ID

Check libsmbclient-php as well as smbclient binary

Add 'OCP\Files\IMimeTypeDetector' to DI container

Fix users list dropdown position after scroll

Fix method call + undefined variable

Allow downgrades for our brave developers, that switch between branches

When scrolling, the position calculation of the multiselect dropdown was
wrong. Adding "position: relative" to the list container makes the
button calculation relative to it instead of the whole page. In this
case the dropdown is properly aligned with the field regardless of
scrolling.

[Sharing 2.0] create share

[3rdparty] Bump symfony/polyfill-php

Move lib/repair to lib/private/repair

remove mention of 'filesystem_check_changes' => 2 from the config sample

Add token in webdav download link of public page

1. Variable is not defined
2. Method does not expect any parameters

```
Undefined variable: user at /Users/lukasreschke/Documents/Programming/master/apps/encryption/settings/settings-admin.php#45
```