[flint] Clean up small things
This MR improves small things here and there.
It have to be merge before the restart, but can stays open in the mid time for other small things.
Right now i have nothing anymore to do. So feel free to merge it if you have time.
- Rework the boxing
- Small changes on icons
- Non-regression test on stored workspaces
- BLISS side
clean_up_user_data
to remove corrupted data from Redis, in case - Fix simulator regression
- Plus few small things