APIv1 refactor + APIv2 start

While working on the APIv2 I realized it was time to refactor the Roundware system to reduce the number of interdependencies between Roundware and Roundwared. They are separate programs. `roundware` is the Django web admin and API host. The other, `roundwared`, includes the daemon audio stream script rwstreamd.py. 

This pull request contains no changed/new functionality for the web admin or APIv1, it exists to implement the major file structure changes to reduce any potential merge hassles. Part of APIv2, but is non-functional.

Change summary:
* roundwared/server.py -> roundware/api1/commands.py - Getting APIv1 code out of the roundwared daemon directory.
* roundware/rw/views.py -> roundware/api1/views.py - Both files exist. Only APIv1 code moved.
* roundwared/db.py -> roundware/api1/commands.py - Both files exist. Only functions used by server.py moved.
* roundwared/dbus.py -> roundware/lib/dbus_send.py - Code for sending data via dbus moved to a separate file.
* roundwared/convertaudio.py -> roundware/lib/convertaudio.py - File used only by APIv1 (soon APIv2) moved to the Roundware Library™.
* roundwared/discover_audiolength.py -> roundware/lib/discover_audiolength.py - File used only by APIv1 (soon APIv2) moved to the Roundware Library™.
* roundwared/daemon.py -> roundwared/rwstreamd.py - It was only one function/method definition.


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