BUG: Cannot create empty run #546
Description
What is the issue?
When trying to create a run from scratch with the test-run-empty, it errors out because it doesn't know what to show the user, as no form exists for a None step.
This workflow originally was created for unit tests only, but is actually a really useful feature, as you cannot choose the very first step of a run without manually modifying a run file atm.
How to reproduce the issue?
Try to start a new run with the test-run-empt workflow in the browser.
What is the expected behavior?
Just show an empty form, as the sidebar etc. will still be shown, and the user can then start adding steps. Might have to make it so that on addition of a step, the user is immediately dropped into that very step.
Bonus points: the user can delete the current step, and is then reverted back to the previous step / empty screen if it was the last step.