Formatting - center the triads.
Merge branch 'master' of https://github.com/efekarakus/potter-network

Conflicts:
	index.html
Fixed the <div class="pottermain"> tags. This fix is purely for displaying in a wiki so that the css for <body> does cascade up to the main wiki body wrapper.
Requires moving the formatting of body {...} to pottermain {...} in main.css