Add foreman configuration for Heroku:
- To test production configuration execute NODE_ENV=production foreman
start
- Database connection configuration now handles "use_env_variable" which
should be defined as a environment variable such as "DATABASE_URL"
with a proper database URI connection string, ie:
postgres://user:password@db.example.com:5432/database
- Added package.json configuration to run migrations and db seed after
`npm install`
Update frontend models to match sequelize definition.
Update views to work according to the changes above.
Handling isCompleted and parentId apropiately for PostgreSQL databases
DC*