Ease datacube config change (Time)

When working deeply with the editor on some AOI, we often want to change the date to see how things changed on the map. For instance, when polaying with wildfire and burnscars detection, moving few days back and forth to inspect the evolution of the fire is something I do a lot.

So to ease that practise, I see some improvements in order of priority:

- [x] Re-enable the "apply" button when a config change. Currently, I have to go back to the code and add a blank space to have access to the apply button again (urgent)

2. Have a more adapted time selection. A time-range slider would be super useful. And if additionally, it can give hints on when the data is available, that would be great!
3. A better interaction with time directly in the map. The time slider described in 2. should be easily available on the map directly. The idea would be to navigate in time and space very eaily in the map. Bonus, having a compare function between 2 dates would be fantastic!