Changed LEDs wirings for mega platform


- LEDs are now wired to 46-49 mega pins
Added RTC support

- rtc_module (.h/.ccp) allow to use DS1302 RTC to get loca time
- DS1302 wirings have been added in pins.h 
- customFrameBuilder have been modified to take RTC time into
account (millis are now identified as "system time")
- application code have been modified to use RTC module
- project properties have been modified to include rtc module related
code