Add real favicon.ico. It's very elegant.
Add real favicon.ico. It's very elegant.

R=csharp@chromium.org
BUG=

Review URL: https://codereview.appspot.com/105960044

luci/luci-py,pombreda/swarming,pombreda/swarming,luci/luci-py,luci/luci-py,madecoste/swarming,madecoste/swarming,pombreda/swarming,luci/luci-py,madecoste/swarming,madecoste/swarming,pombreda/swarming