Resize img/opg.png to 256x122.
Losslessly compress img/ubuntu.png.

Before: 1642 bytes
After:  1552 bytes
Convert favicon.png to ico.

This way it should work in all browsers.
Merge branch 'img' of https://github.com/XhmikosR/fixubuntu into XhmikosR-img

Conflicts:
	index.html