Update Service pages with all services

Currently, this is a first draft of a new serices page. https://hifis-review-app.hzdr.de/review-apps/hifis-hifis-net/114-services-page-needs-update/services

It works by putitng services pages into services/software, or cloud, backbone respectively, and then creates the boxes for those pages.

I would be happy to get a few early opinions:

https://hifis-review-app.hzdr.de/review-apps/hifis-hifis-net/114-services-page-needs-update/services

Closes #114 (closed)

_data/navigation.yml

@@ -17,6 +17,9 @@ header:
         - title: "Events"
           url: "events"
 
+        - title: "Services"
+          url: "services/"
+
         - title: FAQ
           url: "faq.html"