Fix unexisting class and PHPDoc

You can't add int here as hint...
Merge pull request #11090 from owncloud/fix-undefined-class-and-phpdoc

Fix unexisting class and PHPDoc
Revert "improve logo flexibility to fix wide custom logo alignment, fix #9339"

This reverts commit 064e6951e1ef792422ff6cf24fce79c2320d4d5e.

Reverting due to regression that breaks styles in error page, setup
page and others.

Fixes #10967
HTTP authentication provider for ownCloud

A user backend which implements IApacheBackend. It checks
REMOTE_USER and trusts that the server has authenticated the
given user ID. Uses three cookies to do some somewhat
sophisticated state tracking that should allow for hybrid
configurations and handle logouts and lost ownCloud sessions
gracefully.
delete the auth token correctly after validating it