Added code to parse the MegaSAS.log file to try and determine if a given drive's ID LED is illuminated or not. Used this data to swap the icon used to represent the drive with one having a stylized LED icon. Made the drive icon itself a button that toggles the LED state. Left the 'Turn On' and 'Turn Off' buttons as the log parsing isn't 100% and this gives the user to effectively reset the LED's state.

Signed-off-by: digimer <digimer@alteeve.ca>