71537 output bower versions

@park9140 , there is no pullquestor data for this repo, but you're the only person I was going to send this to for code review.
We need to make the version output run on install either here or in the build process.  Then we also need to create a quick test branch of ppmspa using this version of grunt-bower-tasks, to verify that it is being executed correctly in our teamcity build process.