GPII-698: Fixed possible value range for both volume adjuster and fontSize.
GPII-698: Added range limitations for universalVolume adjuster too.
GPII-698: Added limitations for voicePitch adjuster.
GPII-698: Removed upper value for fontSize.
Merge pull request #58 from radmanovi4/gpii-698

GPII-698: Fixed value ranges for voicePitch, Volume & fontSize textfield steppers