rest: change autodiscover to search for a different submodule

[sheppard]

Currently, wq.db.rest.app.autodiscover() searches for myapp.views (and myapp.serializers) to ensure registration methods are called. The choice of views makes some sense as much of the view logic is handled automatically by the router. However, it makes things a bit messy whenever one needs to actually define custom views. It would probably be best to recommend a separate namespace for registration: myapp.rest, myapp.app, or myapp.routes being some possibilities.

[sheppard]

Partially completed in #5 with the inclusion of */rest.py in the autodiscover path. All internal apps now use rest.py to register with the router. The next step is to remove */views.py and */serializers.py from the search path; this will be done in 0.7.