An effort to make PocketSphinx working

- more logging implemented
- few fixed to the C code

Still, the code mysteriously cannot listen to the user when run by the daemon.
Tests are passed, however.
Fix Cython problem
Another try
Another approach to fix Travis...
Another approach to fix Travis...
Hope this will finally satisfy Travis
Close file after opening it (me silly...)
Add a bit of additional logging
Simplify D-Bus proxy a bit
Try to test asynchronous speech recognition