- Updated dutch translations
- Updated README with contribution instructions
- Changes in libfritz++
  * Modified FonbookEntry class: one FonbookEntry now holds all numbers of a 
  person 
  * phone book entries now have the additional fields "quickdial", "vanity", 
  "priority", "important"
  * now parsing the Fritz Box's phone book via xml export file (if available)
  * adapted local phonebook to use the same xml format, new FB versions use.
    Existing csv phone books are converted to xml automagically, entries 
    with TYPE_NONE are converted to TYPE_HOME
- Modified displaying of phone books accordingly