Revert "Added SVG icons"

This reverts commit 05f5638aa06d90398e76ca6555978c3a4b5e4475.
Revert "Added favicon and optimized GA script from H5BP."

This reverts commit 9347f4899d107458243f9bd854890c400990e234.
I didn't change anything in these files, but it thinks I did...