Redirects from services/<clustername>

There were old links in the landscape, linking to services/<clustername>. This didn't even work on old hifis.net page for some months; but should work here.

• https://www.hifis.net/services/cloud -> /services/cloud
• https://www.hifis.net/services/backbone -> /services/backbone
• https://www.hifis.net/services/software -> /services/software

@frust45 is this way okay?

Closes #53 (closed)