This reverts commit ff98a7907c. That commit is incomplete since it doesn't include support for the continous deletion of pre-saved history entries as soon as they
finish running. Support for this will require a good bit more work/thought, so reverting for and keeping this code in the git history.
For now, I'm still keeping the dedicated endpoints for those functionalities, but since most of the time there are no dump/deletion requests this should cut down the number of requests made by the client by 2/3.
