Unsticky some of the threads

[shabda raaj]

Right now 7 discussion threads are visible on main page, and 4 of them
are stickied. Remove some old stickied threads so we can see more in
one go.

[Josh Flanagan]

Its much easier to just follow the threads in GMail rather than the
website. Then the stickies do not matter.

Subscribe to the list, Create a label (AppEngine), and create a filter
that automatically Archives and Labels any message to
google-a...@googlegroups.com.