1351a95754
- Fixes storybook coverage command: the coverage directory path was incorrect, but instead of failing `storybook:test --configuration=ci`, it was hanging indefinitely. - Switches back to `concurrently` to launch `storybook:static` and `storybook:test` in parallel, which allows to use options to explicitly kill `storybook:static` when `storybook:test` fails. - Moves `storybook:test --configuration=ci` to its own command `storybook:static:test`: used in the CI, and can be used locally to run storybook tests without having to launch `storybook:dev` first. - Creates command `storybook:coverage` and enables cache for this command. - Fixes Jest tests that were failing. - Improves caching conditions for some tasks (for instance, no need to invalidate Jest test cache if only Storybook story files were modified).