Remove calc terminology from documentation
Removes all usages of calc-terminology from the documentation (part of #708 (closed)).
Beginning with 2nd June, only the "Single Sign On" option for login to the GitLab web interface will be possible. If you don't have an MPCDF wide second factor so far, please get one at our SelfService (https://selfservice.mpcdf.mpg.de). The GitLab internal second factor will not work.
Removes all usages of calc-terminology from the documentation (part of #708 (closed)).