Revert "close 2012 season, and go to maintenance mode"

This reverts commit 706f3acf1c91b09637ea9f21bd056fc33f6fc7c3.
ruby version 2.0.0 down to 1.9.3 because tweetstream does not support ruby 2.0 yet
support new mongoid
start 2013 season
add config-local for getting config data from Heroku
support new twitter widget