GPII-153, GPII-187: Started textfieldStepper

Beginning of refactoring of textfieldStepper. Unit tests are not yet passing.
Merge remote-tracking branch 'cindy/GPII-153_GPII-187' into GPII-153_GPII-187

Conflicts:
	src/shared/adjusters/html/increaseSizeTemplate.html
GPII-153, GPII-187: fixed textfieldStepper guard

Fixed the textfieldStepper guard to handle parse string values inputed from the textfield. Also fixed up the unit tests, all are passing now.
Merge pull request #4 from chrispetsos/GPII-153_GPII-187

Marked the "Magnifier Follows" files as deprecated.
Merge remote-tracking branch 'origin/GPII-153_GPII-187' into GPII-153_GPII-187
GPII-153, GPII-187: Added model relay into the new textfieldSlider component and use it in the speak text demo.
GPII-153, GPII-187: Removed modelRelay out of textfieldStepper into where it's actually used.
GPII-153, GPII-187: Replaced plusMinus component used in pmt textSize adjuster for incrementing or decrementing font size with textfieldStepper component.
GPII-153, GPII-187: Made the tool to not break.
Left only the cursorSize adjuster, because having both this and the
textSize adjuster seems to break it.
Fixed a typo.
GPII-187: Fixed the cursor size slider.
There seems to exist a bug though where slider always remembers the
immediately previous saved value.