fixing windows max depth test

Cleanup database handling

[master] Fix S3 connection regression

Fix S3 folder creation for new AWS API

"Group admin" default label (issue #7706)

make sure class file is loaded once

Close session for avatar get

This also fixes the unit tests

Changed the column header to "Group Admin for" and the default value of
the multiselect box to "no group" if user is not a groupadmin for any
group.

Use mixed as type

This somehow blocked the "Users" UI for me when having a lot of users. - Shouldn't hurt here.

setup filesystem by username, not login name, fixes #11637

Settings sidebar

Actually query() returns value of the type "mixed" (as is also stated in the interface) - this is purely there to make our IDEs and Scrutinizer happier.

Special treatment for Oracle

introduce SessionMiddleWare to control session handling via an annotatio...

Lazy initialize external storages

Fixed the following external storages to not connect in the constructor,
but do it on-demand when getConnection() is called.
- S3
- SWIFT
- SFTP

guess mimetype on touch

Remove \OC\DB\ConnectionWrapper, have \OC\DB\Connection implement \OCP\IDBConnection directly instead

Allow apps to gather performance diagnistics

remove legacy class OC_Updater

URLEncode filenames to be compatible with special characters