GPII-593: OnOffSwitch adjusters can be toggled using the Enter key.
GPII-593: Using the reusable "gpii.adjuster.onOffSwitch" grade for Speak Text On/Off.
GPII-593: Using the reusable "gpii.adjuster.onOffSwitch" grade for Braille On/Off.
Had to duplicate the template because of the additional description in Braille, but also because of a conflict with the IDs in the Speak Text composite panel.
GPII-593: Using fluid.activatable() for onOffSwitches.
NOJIRA: Fixed a script order problem with PCP demo.
GPII-593: Using event.preventDefault() in order to avoid scrolling
down on Space key.
GPII-593: Revived an informational comment.
GPII-593: Using "funcName": "fluid.activatable" instead of this-method.
Merge branch 'master' into GPII-593

Conflicts:
	src/shared/adjusters/html/onOffSwitchTemplate.html
GPII-593: A comment correction.
GPII-593: Fixed some styling issues.
Merge branch 'master' into GPII-593
Merge pull request #31 from chrispetsos/GPII-593

GPII-593: All On/Off toggles can be switched with the Enter key
Merge branch 'master' into GPII-538