BroadcastReceiver

Implemented BroadcastReceiver in a more dynamic way. In the previous version you would have to wait the full 10 seconds until you can continue in the client, even if the client already received broadcasts. This has changed now. As soon as a broadcast was recognized it is published either at the cli or in case of the android prototype app added to a ListView.
Next issues to be solved for the BroadcastReceiver:
- omit duplicates in the list of recognized remotes
- harmonize BroadcastReceiver for OS_ANDROID and everything else (C++11 issue)
- fix x86 simulator to use client apps with it