Add communities/survey service sites

This transfers the community and survey services page from hifis/software.hifis.net>.

Review App:

• New Services Page
• Community Page
• Survey Page

Transferred from software.hifis.net!379

Closes !210 (merged)
Closes #128 (closed)

_events/2021-01-27-helmholtz-hacky-hour-20.md

@@ -10,7 +10,7 @@ start:
 end:
   time:   "15:00"
 location:
-  campus: "virtual"
+  campus: "Online"
   room:   "<a href=https://meet.gwdg.de/b/max-93j-2ef><i class=\"fas fa-external-link-alt\"></i> meet.gwdg.de</a>"
 excerpt:  "<strong>Why don't you share your source code?</strong> Concerns about and solutions for common problems with code sharing."
 ---