Db

Simplified testing by removing boilerplate (setUp function), just subclass TestCase from __init__.

Added flask-testing for testing utilities

Added database module (sql-alchemy). The db location might not be ideal.

Added user model, views and templates for login, register, dashboard and logout

Added error pages,

Added utilities file for utilities
Not that I'm aware of. I think all files have them now, but if we missed some they should come eventually when we continue working on them, probably not a big deal.