End-user control over automated database cleanup.
|Branch:||Affected Dashboard version:|
People collect a lot of data about their nodes in Dashboard.
Different people have different requirements for preserving historical data, and we need to give them control over automated cleanups.
Some people may wish to do this on a per-host basis, some on a per-time basis. We should ship appropriate rake tasks for all this functionality and offer the ability to create cron jobs to run these tasks.