Master re-connection without killing running apps

[bit-pirate]

In some use cases the robot will move out of the reach of the paired android device. We had such a use case during ICRA, when wanted the turtlebot to follow people and robots even outside the reach of our AP. This only worked, if we started the robot app manually on the robot.

Hence, t would be nice, if

• the robot app keeps running, i.e. not being shutdown because connection to the paired master is lost
• on re-connection the remocon detects that a robot app is running and starts the corresponding android app without the robot app being shutdown