make 'Neutral' label optional on PHScaleNode, since it's only labeled in 'Basics' sim
make 'Neutral' label optional on PHScaleNode, since it's only labeled in 'Basics' sim
doc
doc
go directly to 'Solutions' screen in dev mode
11/21/13 implement pH meter for 'Solutions' screen
11/21/13 set up model and view for 'Solutions' screen
Solutions: expand/collapse bar for pH meter
Solutions: expand/collapse bar for pH meter
Solutions: expand/collapse bar for pH meter
11/21/13 Solutions: add expand/collapse bar for graph
11/21/13 add optional 'rightTitle' to ExpandCollapseBar, to support graph
factor out y-coordinate for dropper
11/22/13 Solutions: adjust layout and sizes of match design doc
11/22/13 add 'rightTitle' option to ExpandCollapseBar
update