Continued with data export with PrimeFaces:

Continued with data export with PrimeFaces:
- added prime faces 5.3 to project
- added admin_contact_export.xhtml with navigation rule to export contact data (currently only CSV but e.g. Excel is easy to add)
- added missing contact i18n and export string
- added controller methods generatePhoneNumber() and generateCellphoneNumber(), if e.g. ui:fragment is used, an object id instead of the phone numbers is shown. Maybe a bug in PrimeFaces or wrong usage of ui:fragment? Sometimes a POJO property like contactFaxNumber can be null. Then this needs to be taken care of.

Signed-off-by: Roland Häder <roland@mxchange.org>