Allows users to remove hours but not add

[gene4587]

Pros:

• users can change their stats to it's actual number of hours in case they go AFK for more than the allowed time.
  Cons:
• people might be overstaying in other calls that require less moderation from staff and be dependent on this feature.

[Zackhardtoname]

@nadir7379
what do you think? It should be easy to implement.

[nadir7379]

@nadir7379
what do you think? It should be easy to implement.

@Zackhardtoname I like the idea! If it's indeed easy to implement then I say we should definitely go for this. Makes sense and sounds fair.