Currently the only way for a release to be deleted from Octopus Deploy is using the retention policies. I think it would be a good idea to allow administrators to delete releases from within the octopus dash board. The administrator should have the following options:

1. Bulk removal of releases - This would be similar to the retention policies. Remove all but the last X releases\deployments
2. The ability to remove a single release. Selecting the release should now give the administrator the ability to remove the release
3. Administrator should also have the ability to remove deployments as well.
4. This should be do able at both a project and environment level