Adds flask-script, flask-migrate

Adds manager.py to easily get a shell to the app, add other commands
(database migration, etc).

Adds initial database migration.
Fixes exception on application load

This should enable database migrations to be useful.
Readme

readme explaining database migrations.
Update requirements.txt
Merge branch 'master' into email

Conflicts:
	cbbpoll/__init__.py
initialize teams and 2014 week 16 results in initial migration
Removing outdated sql directory

Now that we have the initial migration in place we can remove the sql
queries used to seed the database.
Merge branch 'master' into email
Merge branch 'master' into email
Add email reminders for poll open and close

Reminders are sent three days and 12 hours prior to poll closing.
Reminders should be setup as hourly cron job, by running "manger.py remind viaEmail"
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