Adds comments about jQuery deferred object staggered loading in labelMap.scala.html.
Adds comments about jQuery deferred object staggered loading in labelMap.scala.html.

ProjectSidewalk/SidewalkWebpage,ProjectSidewalk/SidewalkWebpage,ProjectSidewalk/SidewalkWebpage,ProjectSidewalk/SidewalkWebpage,ProjectSidewalk/SidewalkWebpage,ProjectSidewalk/SidewalkWebpage