Description of problem:
Sometimes a kickstart installation with all required information will hang in the summary hub until the continue button is manually clicked.

How reproducible:
Variable. I was able to consistently reproduce with a minimal kickstart and livemedia-creator run, but the conditions likely depend on my local setup.

Steps to Reproduce:
1. Use rhel7-minimal.ks (not yet released)
2. Run livemedia-creator with ks
3. Use vnc to observe that it doesn't automatically continue.

The problem was due to a button click signal being blocked by a queue not being empty. The state of the queue likely depends on other variables like how fast it partitions the disk(s), how quickly the network status is updated, etc. so it may not always be reproducible.

In my local test setup I was able to get it to happen 100% of the time.