Contact-Dialog hinzugefügt
Allow creation of contact without name attribute
Added Ok- & Cancel-Button to Contact-Dialog
Added displayName-Method to Contact-Class
Added unittests for Contact-Dialog
Added Contact-Table
Added attributes for Ok- & Cancel-Buttons in Contact-Dialog-Class
Table-Widget der ContactTable-Klasse konfiguriert
Added access by index to Contacts-Class
Modified tests for Contacts-Class
Added edit functionality to Contact-Dialog