[ GCI - 2018 ] Multi user feature

[pronoob2112]

Multi user feature is a feature that provides the capability for controlling drone fleets with many users at once. Controlling drone fleets can be really challenging because controller needs to watch all drones at once. With this feature, each user can watch few drones only, not a whole fleet. So controllers have less pressure and more control.

[dilinade]

Duplicate issue #72.