The repair step was a bit overeager to skip repairing so it missed the
case where a group share exists without subshares but with an
additional direct user share.

We should check against the ending substring since people could
run their nextcloud in a subfolder.

* Added test

- Updated the config sample to point to log_type='file'
- Renamed the Class for logfile logging to File in namespace 'OC\Log\'.
  Changed the occurrences of 'OC\Log\Owncloud' to 'OC\Log\File'.
- Renamed the Class for log:file command to File in namespace 'OC\Core\Command\Log\File'.
  Changed registration of the command to use 'OC\Core\Command\Log\File'.
- Changed default Syslog tag to Nextcloud
- Retained backwards compatibility for configs with 'logtype' => 'owncloud'

- Adjusted tests for the new file log.

Closes #490.

Class Throttler implements the bruteforce protection for security actions in
Nextcloud.

It is working by logging invalid login attempts to the database and slowing
down all login attempts from the same subnet. The max delay is 30 seconds and
the starting delay are 200 milliseconds. (after the first failed login)

Fixes https://github.com/nextcloud/server/issues/50

This makes it possible to test special chars with unit tests.
There is already a test for directories but there was none for file
names.

* Fix deprecated getMock call
* No longer requires DB

* Removed from DB group
* Also mock the manager
* Fixed deprecated getMock warnings

In the current setup there is no DI so no way to mock them.

Those old tests make it impossible in the current state to abstract
away.

* No DB required
* Fixed phpunit 5.4 warnings

* No longer require DB

* Do not use DB
* Fix phpunit-5.4 warnigns
* Moved commong stuff to setup

* getMock is deprecated.
* \PDOStatement mocking fails hard on phpunit 4.8