Basic proposal for communities page

Service Page on Communities is so far empty and should have basic content (or no-link).

I made a very basic standard text proposal.

Closes #128 (closed)

changed target branch from master to hifis-unified-step-1-after-vc-20210317

changed the description

assigned to @frust45

changed title from Basic proposal for communites page to Basic proposal for communities page

mentioned in issue #128 (closed)

This will come in via !205 (merged) and software.hifis.net!379

closed