db:reset bugfix on migrations"

Fix on the db:reset bug.

For the merge to go over successfully on your local versions of this branch, you will probably need to manually delete your database first, be sure that line 24 of `applications_controller.rb` is commented out, then run `rake db:migrate`

From that point forward, `rake db:reset` should go on without a hitch.  If you make any new migrations to create new tables, be sure to consider the `:null=>false` business