Website image serving

Updated all comms stuff to express3.
Cleaned up some bits.
Reverted to image sreving only for now to keep things simple.
Now Working for still images

Removed some of the modified video bits as they were breaking.
Updated ARToolkitPlus to last release.
Temporarily fixed issue with large images for calibration.
Further commit for still images

As previous
PoC for video

Accepts m3u8 playlists that can redirect the first stream to a VLC http
streaming server.
Probably only android at the moment. Work in progress
PoC for video

Accepts m3u8 playlist for redirecting to an HTTP VLC server.
Fixed mistake in display function

Missed basic equality check error
More fixes for video display

Now displays in Desktop chrome but not resized