[AL-924] Filled out documentation on running a standalone version on top of jetty.
[AL-924] Filled out documentation on running a standalone version on top of jetty.

uhef/Oskari-Routing-frontend,uhef/Oskari-Routing-frontend,uhef/Oskari-Routing-frontend,uhef/Oskari-Routing-frontend,uhef/Oskari-Routing-frontend,uhef/Oskari-Routing-frontend