Revert "Merge remote-tracking branch 'arnoczar/test_chroot' into develop"

This reverts commit c5b5efa71b22337270018d6cd347069de3776512, reversing
changes made to b973453684f41ea34ce74b5adc6946e269149822.
Fix version reporting in test_debian_chroot, and use curl (See https://github.com/hhucn/adhocracy.hhu_theme/issues/103 )
Merge branch 'develop' into hhu
correct revert