work-in-progress (create and delete)
work-in-progress on reading/writing model from/into db
less code due to decorators
introduced test database and login/logout in tests; fixed parameter saving in manual_fit
fixed submitting a spreadsheet with different name
updated README regarding DB tests
updated README regarding DB tests
chore(readme): adds psycopg2 to readme
improve(project/delete): makes it a DELETE
Merge pull request #64 from StarterSquad/feature/170-store-the-project-data-in-the-database-instead-of-in-files

Feature/170 store the project data in the database instead of in files