Update for app framework removal

Update for app framework removal

Changes:
- Remove the autobuild scripts and config.xml used by the app
  framework widget build.
- Update the qmake files to just build a "settings" binary and
  install it into /usr/bin by default.
- Remove the code in main.cpp that handled reading the WebSocket
  command-line arguments and passing them to binding related
  code.
- Tweak the Bluetooth QML to call into the new start call in
  the libqtappfw-bt Bluetooth object that replaces the previous
  WebSocket onConnected hook.
- Remove the voice related code as it is not likely to be
  re-enabled anytime soon.

Bug-AGL: SPEC-4182

Signed-off-by: Scott Murray <scott.murray@konsulko.com>
Change-Id: I8d3272b62aa403a71adadd26c545c1ed33281e5f