Visual Tweak: Swapped even rows to White and odd to green
Added: Strings for tracking a caller that has withheld their number
Added checks for a withheld number which makes the normal CallerID
either ' ' or 'null' or NULL.
BUG FIX: With held numbers were coming up as the local area so added a
check to display location as UNKNOWN
BUG FIX: Added checks for with held number