Don't show upgrade available notification if upgrade has already started
@mcatanzaro
Submitted by Michael Catanzaro Link to original bug (#766252)
Description
I'm testing out a F23->F24 upgrade following the steps here on Richard's blog.
After clicking Download to start downloading F24, about half a minute later I get a desktop notification informing me that "A new version of Fedora is available to install." Don't show this notification if the user has already started downloading the upgrade.