Make Hochzeit a special vacation

Signed-off-by: Malte Sussdorff <malte.sussdorff@cognovis.com>
Send mail to HR for hr_approval workflows

Signed-off-by: Malte Sussdorff <malte.sussdorff@cognovis.com>
Added new types for DATEV Types

Signed-off-by: Malte Sussdorff <malte.sussdorff@cognovis.com>
Update to new versions of the packages

Signed-off-by: Malte Sussdorff <malte.sussdorff@cognovis.com>
Update to allow hr to see user absences

Signed-off-by: Malte Sussdorff <malte.sussdorff@cognovis.com>