In a deployment, the feed versions of the sources that could not be loaded are updated when nothing else is

[mattwigway]

Steps to reproduce:

1. load a totally broken feed to a new feed source (easiest way to get a broken feed: dd if=/dev/urandom of=brokenFeed.zip bs=1024 count=12)
2. create a deployment. Note that this feed source is not included, but is instead under "feed sources with no valid version"
3. now upload a not-broken feed. note that the display updates to show the not broken feed's stats in the broken feed area.

I'm not sure how to address this; maybe just add a + button to add it do the deployment now that it's fixed.

[mattwigway]

Of course anything is non-trivial because all of the code that provides the summary is packaged up in a view recycled from the feed collections page.