removed deprecated unittest api use, updated and locked down dependencies

R=alanknight@google.com

Review URL: https://codereview.chromium.org//170893002
docs: omit redirect script from app.yaml and rename to AngularDart
fix(doc-gen): CSS restyling and link updates
fix(docs): CSS and link changes for reskinning as angulardart.org
Merge branch 'master' of github.com:naomiblack/dartdoc-viewer