Make senses easily start and stopable #34
Make RoboudMind easily start- and stopable
Create variables in onCreate(), set listeners in onResume(), stop listening in onPause(), stop running threads in onStop(), #34
Call AndroidMicrophone intent via the right RoboudController method, instead of directly
Prevent that picture is taken before variable mCamera is properly initialized
Renamed to American. And notify observers if Behavior is done running
ChoiceAction can now safely start a new Activity and return its results into a variable, fixes #35, fixes #34, fixes #31