Use dev.digabi.fi as repository host.
Merge branch 'master' of github.com:digabi/digabi-repository into HEAD

* 'master' of github.com:digabi/digabi-repository:
  Added Getting Started.
  Added details about different distributions.
  Fixed heading level.
  Limiting SSH access.
  Moved sync script to tools/.
  Two-way sync.
  Rewritten sync script, now supports two-way sync.
  Updated server config, includes Apache configuration.
  Updated server configuration.
  Updated instructions for setting up the server.