[SAC] [OSGeo] #2181: Improve internal server error message

#2181: Improve internal server error message
Reporter: wenzeslaus | Owner: sac@…
     Type: enhancement | Status: new
Priority: minor | Milestone:
Component: Systems Admin | Keywords: trac 500
The message for "500 Internal server error" when Trac server(s) is down
can be improved by providing a contact email and/or additional information
about troubleshooting and reporting. Now it says:

Please contact the server administrator, [no address given] and
inform them of the time the error occurred

Ticket URL: <https://trac.osgeo.org/osgeo/ticket/2181&gt;
OSGeo <https://osgeo.org/&gt;
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