* Reimplemented the blinking procedure:
  - Renamed PIN_LED_ON to PIN_LED_STATUS.
  - new variables: blinkingStatusTimer, blinkingHighPressureTimer, flagHighPressure.
  - new consts: VALUE_TIME_BLINKING_MANUAL, VALUE_TIME_BLINKING_AUTO, VALUE_TIME_BLINKING_HIGH_PRESSURE, VALUE_INPUT_READ_DELAY, VALUE_TIME_RELEASE_PRESSURE_STAGE.
  - renamed inputIs() to pinDigitalValueIs().
  - uncommented revertDigitalSignal.
  - Added release pressure feature in the initial case of auto-mode.
  - reimplementation of updateLeds().
* New constants VALUE_HIGH_PRESSURE_ENABLED, VALUE_HIGH_PRESSURE_DISABLED.
* applyManualMode():
  - High pressure protection.
* applyAutoMode:
  - restarting at stage 0 to ensure recalibration for each press.
* loop():
  - replaced HIGH-LOW values with defined constants.
Merge branch 'master' of github.com:jaqm/Open-CEB-Press

Conflicts:
	Firmware.ino
* loop(): Removing manual led update.