Add plussers logic in the pod controller
Add plussers logic to the release controller.
To display the plussers.
To display non pauseid plusser count.
Changed plusser logic.
Search for plusser added.
display plussers.
Tidy everything.
Changes in find_plussers function.
changes in display plussers.
Merge tidyall changes.
Minor cleanup.
Use a terrible placeholder for users with missing gravatar URLs.

We won't skip users with missing icons because then the ++ number won't
add up.  Someone with a better icon can fix this or we leave it as is in
order to motivate us to clean up the cases where users blew away the
original URL and haven't been able to replace them.  I believe there is
an open issue for this.