Replace occurences of "Matterhorn" with "Opencast" in configuration files

Description

In most of the configuration files, one can still find a lot of references to the old product name "Matterhorn". They should all be replaced by "Opencast"

There are also some technical settings (e.g. system user name) which contain references to Matterhorn.

Fixed and reviewed
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Assignee

Greg Logan

Reporter

Basil Brunner