Mission: Adding a new event to indicate that a new mission has been received
Mission: Request the drone mission when arming.
Mission: Fixing bug in the Home object
Mission: Removed debug code.

The home icon loaded missions, but now we have that functionality via the menu.
Mission: Moving request to update the mission views to the super class
This ensures that both child activitys (Editor and Flight activities) will be updated on start-up.
Mission: Make both map fragments update on start-up.

This makes sure that when the fragment is created it's showing the latest mission data.
Mission: Clear the mission selection whenever closing an activity.
Merge pull request #556 from arthurbenemann/issue505

Fixing problems with the Home object