Finish 12-create-joystick-driver
Updated xplained pro platform files for RF testing
Restored hello-world example
Removed leds_toggle calls which were added for testing
Defines the capacitance load value for the crystal
Defines the capacitance load value for the crystal
Changed SPI clock for RF from 4MHz to 5MHz
Updates udp client server
Don't activate sensors in main
Finish 5-create-external-flash-driver
Fixes merge conflicts with 16-create-capacitive-wheel-driver
Poll ethernet every 10ms
- All sensors report only changes through sensors_changes API
- sensors-test example show state changes of all sensors
Merged 'develop'.

Conflicts:
	examples/hello-world/hello-world.c
	platform/easyRF/Makefile.easyRF
	platform/easyRF/contiki-main.c
	platform/easyRF/dev/esd_spi_master.c
	platform/easyRF/enc28j60-arch.c
Renames display related files
Removes sett struct
- Removes test code from main
- Fixes bug in configure MISO function
- Adds set_px to sensors-test example