pulp/pulp — pull request #734 by jortel (2013-12-10 15:50:49+00:00)
Title: Content sources cancel

Things to look for:
- Renamed ContentWarehouse to ContentContainer. Just wasn't working for me ;)
- Add generic utility for calling and canceling synchronous flows.
- Moved the download listener to the download() method instead of instance attribute. The listener does not apply to refresh() so kind of weird.
- Refit cancel to use the cancel utility.
- Removed unwanted 'cancelled' state (attribute).
- Removed cancel() from the Container (again, weird).