kalkdoser cleanup

kalkdoser method cleanup but still not working like I want
removed unused Flags variable
add ifdef to WifiAlert if eth or wifi are not running.  
Would be good to refactor WifiAlert into a new RA_Alert class, move the alert definitions out of ReefAngel class, and expand it to allow for custom alerts that will display  on the LCD, send sms,send email, etc...