Spark WebUI Implementation.

core/src/main/resources/spark/deploy/master/webui/index.html

...c/main/resources/spark/deploy/master/webui/spark_logo.png

...c/main/resources/spark/deploy/worker/webui/spark_logo.png

core/src/main/scala/spark/deploy/DeployMessage.scala

core/src/main/scala/spark/deploy/master/Master.scala

core/src/main/scala/spark/deploy/master/MasterWebUI.scala

core/src/main/scala/spark/deploy/master/WorkerInfo.scala

core/src/main/scala/spark/deploy/worker/ExecutorRunner.scala

core/src/main/scala/spark/deploy/worker/Worker.scala

core/src/main/scala/spark/deploy/worker/WorkerWebUI.scala

core/src/main/twirl/common/layout.scala.html

core/src/main/twirl/masterui/executor_row.scala.html

core/src/main/twirl/masterui/executors_table.scala.html

core/src/main/twirl/masterui/index.scala.html

core/src/main/twirl/masterui/job_details.scala.html

core/src/main/twirl/masterui/job_row.scala.html

core/src/main/twirl/masterui/job_table.scala.html

core/src/main/twirl/masterui/worker_row.scala.html

core/src/main/twirl/masterui/worker_table.scala.html

core/src/main/twirl/workerui/executor_row.scala.html