Removed crufy webcam code.

We will now serve directly from the camera, rather than fetching an
image periodically. This means its only visible if the camera is
available directly on the network, but this is fine for now.
Implemented a simple timer utility.

This is used to time redis access and full request generation as a
simple debugging tool.
Removed the now unused webcam filename.
Merge pull request #37 from d0ugal/refactor

Removed crufy webcam code.