Don't allow class with cardinalities on P and on a subproperty of P

[benjamingeer]

This prevents the problem described in #978.

• Check for this when loading ontologies on startup.
• Check for this when creating a class via API v2.
• Add tests.
• Update docs and release notes.

Fixes #978.

[codecov]

Codecov Report

Merging #982 into develop will increase coverage by <.01%.
The diff coverage is 95.45%.

@@             Coverage Diff             @@
##           develop     #982      +/-   ##
===========================================
+ Coverage    82.51%   82.52%   +<.01%     
===========================================
  Files          150      150              
  Lines        17054    17069      +15     
  Branches      1613     1629      +16     
===========================================
+ Hits         14072    14086      +14     
- Misses        2982     2983       +1

Flag	Coverage Δ
#integration	46.15% <54.54%> (ø)	⬆️
#unit_e2e	81.35% <95.45%> (+0.01%)	⬆️

Impacted Files	Coverage Δ
...ora/webapi/responders/v2/OntologyResponderV2.scala	90.76% <95.45%> (+0.03%)	⬆️

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[subotic]

Thanks. LGTM :-)