Inactive deal cards - Take future and scheduled activities into account

[DS2021]

Currently, even if future meetings are scheduled on a deal, the deal card remains blue. 

If activities are scheduled on a deal, the deal card should not be blue, but we would like to see it white.  HubSpot could include a similar day counter for non activity, but into the future. 

Note: Pipedrive has this worked our really well. Take their example.

@ybaptiste 

[PHokkanen]

We would also really benefit from this feature. Just checking that if the next activity date is known, then the deal won't show as inactive.