dartdoc-viewer: finals and toStrings

R=alanknight@google.com

Review URL: https://codereview.chromium.org//184073003
Analytics: only set the path component of the URI

So analytics doesn't display the path as /http://api.dartlang.org/...

R=alanknight@google.com

Review URL: https://codereview.chromium.org//200193005
Merge remote-tracking branch 'upstream/master' into angular-skin