Refactored RA_Wifi 

Refactored RA_Wifi to move methods out of the global scope into a new RA_Wifi class to enhance code re-usability.  Also moved portal code from ReefAngel class into the new RA_Wifi class.

The changes to Strange issue with line endings on InternalEEPROM and RA_Nokia.h.  Every time I checkout it only shows these 3 files as modified.  Would appreciate if you can also merge these in so it stops happening.