bug fix: smooth stop of the recording, now saving recording and stopping
service from new thread.
Bug fixes: app navigation and interface

 + Fixed button on configurations activity showing in the middle of the
screen and then moved to the bottom of it when coming back from new
recording.

 + Fixed navigation when going back to configurations from new recording
after pressing notification. Instead of going to the home screen when
back button pressed now it navigates back to its parent activity
(configurations activity)