improved layout of HorizontalPanel
changed layout of birthday form,
changed design of input field
changed form nesting
added code to revalidate scroll pane
implemented clone method for contact
added methods to clone contact
implemented addition of cloned contacts to list, needs testing
removed some debug output
Merge branch 'master' into devel
splitted mergeWith method into several merge methods for the different
contact parts
sorted methods
phone comparison now by simple number
improved simpleNumber
AdressList newly created
implemented contact merging, needs to be tested
implemented remaining methods of AdressList
implemented merging of adresses, fixed bugs
added interface Mergable,
converted AdressList to MergableList
implementing Merge-methods for name and adress
sorted methods in name