Added the PeerCoin logo to the header image.
Simplified homepage header.
Revert "Simplified homepage header."

This reverts commit a4535733f971d11be4f4e7bd4112daba6faea6a1.
Revert "Revert "Simplified homepage header.""

This reverts commit 448c047f0932889e73c50ec0db97b8845a29e214.
Made the header logo smaller.
Made an index for the icons for easier development.