Fix up label display for User objects
Merge pull request #47 from darrenbilby/master

Fix up label display for User objects
Add logo to readme.md
Announce logo change
RESTful API work and bugfixes.

Lots of RESTful API work.
New logo added to the UI.
Fixes for CPU limit end to end tests.
Fixed hunt rules bug: https://github.com/google/grr/issues/50
Fixed windows client network interfaces bug:
https://github.com/google/grr/issues/46
Merge branch 'master' into ClientEnhancements