Removed minus sign shown next to the remaining
time value for timers showing progress in
Meditation, Relaxation and Power Nap apps.
Style constants cleanup.
*DigitsContainer definicions moved to cpp file(for proper linkage)
*DigitsContainer changed container to std::vector
*Fixed a bug in ProgressTimerWithBarGraphAndCounter where timerText was
treated as timeWidget
*MeditationCountdownWindow timer is now custom size
*Minus removed form MeditationRunningWindow timer
