Set up a development system

In order to set up a minimal database system for development:

1. Install docker (and docker-compose in case it’s not included in the installation)

2. Start the server and database:

   ` $ docker-compose up `

3. Add test data:

   ` $ psql -h localhost -U postgres swefreq -f test/data/browser_test_data.sql `

The test data contains all data required for the browser tests.