jobs grouped by pushes.  results collapsable.
results now show as buttons
accidentally removed filtering the search, re-added.
add popover to button to show/hide push results.  not working right, but partially there.
remove need for type field in results json by just checking if a job has child jobs
readme updates
make view/hide results button have proper label
Merge pull request #5 from mozilla/jobs-by-push

Jobs by push