Decouple reading EEPROM from writing EEPROM.

Now writeEEPROM() does only what it's name implies and it's method takes no arguments.  This
avoids the 0/1 magic numbers which was a flag to decide whether the user
should be notified after the EEPROM has been read (!).

Introduced a method called readEEPROMAndNotify() which is used in all
cases where writeEEPROM(1) was previously called.

Additionally this avoid re-reading the profile when the reboot command
is issued which speeds up reboots.

Finally this avoid needless comments because the code tells you now what
it is going to do.