Configuration/Management overview for admins

[maldwg]

As and admin, I want to configure the system's behavior from the frontend.

Changes:

• Create a frontend overview with options to set for the application
• Create DB table for configuration flags to be set to True or False
• Write a decorator or at least a helper function to take as input one or more configuration options and check if they are set to true

Hint: The actual configuration options will be defined in separate tasks.