[SPARK-5294][WebUI] Hide tables in AllStagePages for "Active Stages, Completed...

[SPARK-5294][WebUI] Hide tables in AllStagePages for "Active Stages, Completed Stages and Failed Stages" when they are empty

Related to SPARK-5228 and #4028, `AllStagesPage` also should hide the table for  `ActiveStages`, `CompleteStages` and `FailedStages` when they are empty.

Author: Kousuke Saruta <sarutak@oss.nttdata.co.jp>

Closes #4083 from sarutak/SPARK-5294 and squashes the following commits:

a7625c1 [Kousuke Saruta] Fixed conflicts