Moved utils functions to UIUtils.
Merge pull request #5 from andrewor14/ui-refactor

Wide refactoring of WebUI, UITab, and UIPage
Merge branch 'streaming-web-ui' of github.com:tdas/spark into streaming-web-ui

Conflicts:
	streaming/src/main/scala/org/apache/spark/streaming/StreamingContext.scala
	streaming/src/main/scala/org/apache/spark/streaming/ui/StreamingTab.scala
Added Spark and Streaming UI unit tests.