GPII-226: Transforming UIO schema to GPII schema.
and sending payload to prefs server.
GPII-226: Transformed part of the model to use GPII common terms and required data structure when saving it to GPII server so it can be applied to OS.
Merge remote-tracking branch 'chris/frames-pilots-2' into GPII-226

Conflicts:
	src/shared/common/GpiiStore.js
GPII-226: Harmonizing the UIO model with GPII.
Harmonized the following element enum with GPII.
Harmonized the magnifier position enum with GPII.
Added transformation rules for "Contrast" and "Increase size" GPII-supported preferences.
Had to hack UIO preference value as an array, because this is the way that GPII wants it.