On a context class diagram, only show all the operations and attributes for the class itself, not on any other class

[gboersma]

The context diagram gets very cluttered when all the classes show all of the attributes and operations, and draw focus away from the primary class. Hide all of the additional information for the other classes.

[dspinellis]

:+1:

[dspinellis]

• Please make the issue title more descriptive (split into more issues if needed)
• Follow current coding conventions
• Ensure tests run correctly before and the changes