Feature/site core - Skeleton Project

[Egonor]

Skeleton project using Django:

• 'core' app to control site flow.
• Basic DB Models
• Implements some basic template functionality
• Basic navigation between pages (actual navigation/views relies on user groups)
• A custom User in case we decide to implement multiple user types. (We'll likely use groups instead, but this needs to be set at the start of a project).