Cleanup in Contacts.

apps/contacts/ajax/addcard.php

apps/contacts/ajax/categories/edit.php

apps/contacts/ajax/messagebox.php

apps/contacts/ajax/setproperty.php

apps/contacts/ajax/showaddcard.php

apps/contacts/ajax/showaddproperty.php

apps/contacts/ajax/showsetproperty.php

apps/contacts/css/styles.css

apps/contacts/js/interface.js

apps/contacts/l10n/xgettextfiles

apps/contacts/templates/part.addcardform.php

apps/contacts/templates/part.details.php

apps/contacts/templates/part.messagebox.php

apps/contacts/templates/part.no_contacts.php

apps/contacts/templates/part.property.FN.php

apps/contacts/templates/part.property.N.php

apps/contacts/templates/part.property.php

apps/contacts/templates/part.setpropertyform.php