Some small changes

Hi,

I did some small changes to your excellent vcard2fritzXML converter. Here are the changes:

1) Name format changed for family name, first name. Because I like the format Meier, Willi. I only added a comma and handled empty first name fields.

2) Number priority changed for missing home number. If the home number is missing I think it makes sense to give the mobile number the highest priority.

3) Some small code adjustments. I couldn't help it.

If you like the changes you can merge them.

Beste Grüße
Ludger