StageUtils.generateCompoundIterativeTask(): added support for returnTime
parameter in async tasks.
rename launch file
added comment
reorganized code
Improved speed of asynchronous functions by using returnTime parameter.
added error checking
fixed bugs with line chart groupBy feature.
added dimension slider hack

Change-Id: If9e4b3adaa8ecc78d21431e25de7162ddb541375
fixed bugs with async behavior.

Change-Id: I239656cb1a4758abf6e2eca406df8f7354957abc
added test file
Merge remote-tracking branch 'upstream/master'

Conflicts:
	WeaveData/src/weave/data/AttributeColumns/NumberColumn.as
	WeaveData/src/weave/data/AttributeColumns/StringColumn.as