Add Australia (au-) versions of favicon and logo_square graphics.
Add Australia (au-) partner img for pyconau and pyladies.
Add au-favicon ico to static img.
Add Australia specific css as au-style.css

The only thing that has really changed in the file is global replace of 
orange with (djangocon.au) green. 

This file existing will allow us flexibility in the future though.
Replace in australia html style.css import with au-style.css.
Replace australia html meta information.

Mainly replacing EuroPython with PyCon AU, concerned I may have missed something though.
Update australia html contact details and footer information.
Update australia html Sponsors and Partners content. 

Commenting out code as necessary. This is not pretty but this is all very placeholder anyway.
Update australia html main copy and register button/link text.

Much editorial! This is very much an early working version.