Revert "Experiments can now be aborted during drift-correction (both manual and fix-triggered)"

This reverts commit d60a05496a3395f14f367ff58a8aca0042697d5a.
Experiments can now be aborted during drift-correction

almost identical to commit d60a05496a3395f14f367ff58a8aca0042697d5a
but without messing up sebastiaans line endings