karma: update config to include angular-ui-router
karma: update config to include angular-ui-router

This was forgotten when angular-ui-router was introduced in
b17200089daf. While it didn't cause any visible problems yet, it
triggered a warning when Karma was run:

  WARN [watcher]: Pattern
  "/home/travis/build/zerovm/swift-browser/app/bower_components/angular-route/angular-route.js"
  does not match any file.

mindware/swift-browser,zerovm/swift-browser,mgeisler/swift-browser,zerovm/swift-browser,mgeisler/swift-browser,mindware/swift-browser