Neos bugfix release: 4.1.6

A bugfix release for Neos was tagged. It contains an important bugfix for the media browser.

Neos 4.1.2, 4.1.3, 4.1.4 and 4.1.5 have been released as well, but contain no changes and were tagged from a wrong commit due to build caching issues.

Thanks to those who contributed!