Description Sönke Schwardt-Krummrich 2021-12-02 17:53:36 CET

After SSH login, the message of the day says:
---[cut]---
You can log into the Univention Management Console - the principal tool to manage 
users, groups, etc. - using the "Administrator" account and the password selected 
for the root user on the master domain controller.
---[cut]---

The term "principal" confused at least 4 colleagues. After some attempts with translation tools, "principal tool" translated to "das wichtigste Instrument" (the most important tool).

I think we should replace "principal tool" with "main tool" in the motd.

./univention-base-files/conffiles/etc/issue:    print('You can log into the Univention Management Console - the principal tool to manage ')
./univention-base-files/conffiles/etc/welcome.msg:      print('You can log into the Univention Management Console - the principal tool to manage ')