Cleanup whitespace

Signed-off-by: Alex Coles <alex@alexbcoles.com>
Use the slightly DRYer image_tag helper

Signed-off-by: Alex Coles <alex@alexbcoles.com>
Link to each of the projects

Signed-off-by: Alex Coles <alex@alexbcoles.com>
Update Vorstand in Impressum

Signed-off-by: Alex Coles <alex@alexbcoles.com>