Merge pull request #140 from seuros/mongo_grave

use postgres_ext instead of hack
Merge pull request #141 from seuros/mongo_grave

Remove old stuff.
[WIP] Sketch out the MongoDB BSON dump -> JSON -> ActiveRecord mapping pipeline
[WIP] Adding team members
Updated the annotations
Added team_size to teams
Updated annotations and fixed bad reference on the teams_member attribute checker
Added save team but it's wrong, I shouldn't have created new fields. Just put a new join table record
Added TODO for fixing the creation of members
Removed the thumbnail_url from the schema
team model clean up