Implement database

[simondereuver]

Start working on implementing the database.

• [x] Create a directory called models/ (for database model)
• [x] Create a .js file for the database
• [x] Set up initial database, such creating it and just simply setting it up

[simondereuver]

Done in commit: f9ccd8700b2c5a6cb1710714b7a7b900659bb9ff