Try to get the `.editorconfig` and `.prettierrc` files as close as possible
to the formatting that was used in Flamenco. Because these files weren't
here during most of Flamenco's development so far, having them caused quite
a few changes in the webapp files.
No functional changes intended.
- Added initial description and illustration
- Swap "Check" button for fields with a debounced @input event
- Turn Blender's list into a radio selector
- Tweak wording when paths are not found
- Add microtip library for tooltips
- Make navigation steps clickable, according to the state
