Add correct favicon to icons folder

I had Geoff create the correct favicon at 16x16 for us. It is just the 'e', as the logo with the circle-band doesn't render as well at the favicon dimension. 

It is not hooked up though. I realize it should be a no-brainer, and I tried a couple things, but I can't get the link_to authored right for it work on my version. <sigh>. I am probably missing something obvious.

Anyway, the correct favicon.ico is in the icons file, ready to be correctly implemented. :smiley: