Bug 1090777 - No error message is displayed when importing VCard with so...

...me non-UTF8 contacts
This won't work because `ADR` is not the only case that uses quotes. A quick glimpse to the 4.0 RFC yields some examples of lines with quoted properties:

```
TEL;VALUE=uri;TYPE="work,cell,voice,video,text":tel:+1-418-262-6501
N;SORT-AS="Pozo,Oscar":del Pozo Triscon;Oscar;;
ADR;GEO="geo:12.3457,78.910";LABEL="Mr. John Q. Public, Esq.\n
      Mail Drop: TNE QB\n123 Main Street\nAny Town, CA  91921-1234\n
      U.S.A.":;;123 Main Street;Any Town;CA;91921-1234;U.S.A.` 
```

All parameters can be enclosed in quotes in vCard 4.0. In previous versions, the Quoted Printable special format was used most of the time.