Added checker drop animation.

Moved all js functions to connect.js. There are also several stub
functions added to allow for testing w/o a working win check (and
accompanying functions). Added jQuery UI (should probably get a minified
version of only what we need instead of relying on google's full
version) to animate the checker-drop (may need a bit more tweaking after
more eyes look at it). Behavior is a bit weird right now as the row it
stops at is determined by the row you actually click on - this was for
testing purposes, the "stop row" will be provided by Susan's findRow()
at a later point.