Updates to standalone cluster, web UI and deploy docs.

.../src/main/scala/spark/deploy/master/MasterArguments.scala

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

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

.../src/main/scala/spark/deploy/worker/WorkerArguments.scala

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

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

...rc/main/twirl/spark/deploy/master/executor_row.scala.html

...main/twirl/spark/deploy/master/executors_table.scala.html

core/src/main/twirl/spark/deploy/master/index.scala.html

...src/main/twirl/spark/deploy/master/job_details.scala.html

core/src/main/twirl/spark/deploy/master/job_row.scala.html

core/src/main/twirl/spark/deploy/master/job_table.scala.html

.../src/main/twirl/spark/deploy/master/worker_row.scala.html

...rc/main/twirl/spark/deploy/master/worker_table.scala.html

...rc/main/twirl/spark/deploy/worker/executor_row.scala.html

...main/twirl/spark/deploy/worker/executors_table.scala.html

core/src/main/twirl/spark/deploy/worker/index.scala.html

docs/_layouts/global.html

docs/configuration.md

docs/ec2-scripts.md