GPII-364: Created conditional panels for "Add contrast".
Also gave a default value to contrastTheme "bw".
GPII-365: Created conditional panels for "Increase size".
GPII-365: Implemented hiding of Magnifier extra adjusters.
Only "more/less" is left out of expansion.
GPII-365: Showing/hiding more/less of magnifier.
Could not get magnifierEnabled value here through protoTree, so this behavior is DOM dependent on an element existing in a sub-panel.
GPII-365: Showing/hiding more/less of magnifier model-bound.
Only slight issue is that i have to replace "." with "_"in preference name.
GPII-364, GPII-365: No cursor pointer on headers.
GPII-364, GPII-365: Overall styling and outlook.
Resembles now the mockups. Will need some more work upon merging with Alex.
GPII-364, GPII-365: Cleaned-up some useless parts.
GPII-364, GPII-365: Some styling tweaks for Chrome.
GPII-364, GPII-365: Minor styling tweak.
Merge branch 'adjusters-pilots-2' into frames-pilots-2
GPII-364, GPII-365: Added more/less message in frames.json.