Tighter Gravatar integration. New window/tab on most activity links.
Each Gravatar thumbnail is now a link to the Gitblit Gravatar profile
page. This page displays some of the profile information and contains a
link to the full Gravatar profile.
Activity page links now launch a new window/tab instead of targeting
"self" since it can be expensive to requery the activity information.
Settings overhaul. Fixes to authentication. Bind interface feature.
Settings access has been abstracted and the way is becoming clear to
offer a WAR build in addition to the integrated server stack. Util
methods moved around.