This MR provides the configuration for unit testing the viewer's components and a very basic first test making use of jest and the expect-library. moreover there are several minors added:
Are we able to test this new feature?
npm run test:unit
Add all related issues and especially those to be closed.
/cc Manikanth Dindigala, Mathias Göbel, Frank Schneider, Michelle Weidling, Nils Windisch