Python HTTPServer will shut down on `Ctrl + C`
User custom port for python server

`startserver.py` needs to be called with one argument: the port number
to listen on
Code cleanup of the start script

Merged the `stream.sh` into the `start.sh` script
Removed ajax from function to load webcam image

Use a temporary image element to pre-load the image and replace the
actual image source when it's loaded.
Stretch the webcam image to 100% (width/height)