Show improved progress / status on "Package Repository" import

[jyoung8711]

If you're importing packages into a SystemLink Repository from a remote feed, the current status / progress is entirely unhelpful... On computers with slow connections, importing something like LabVIEW or DIAdem can take up to 10 minutes... and then in some cases it's failing.... and all we get while we're waiting is the following spinning wheel.  It would be nice to get some additional feedback on the status of what's going on.. maybe a "downloading x of y" or a progress bar or really anything else.