- removed dummy UClasses (no longer needed)
- removed file header comments (not used)
- removed duplicated function documentation in cpp files
- documentation cleanup, punctuation, spelling etc.
- pragma once include guards (now work on all platforms)
- relative public includes (are auto-discovered by UBT)
- fixed too many/too few line breaks
- deleted empty files
- missing override
- NULL to nullptr
[CL 2305058 by Max Preussner in Main branch]
- Code cleanup and minor rearrangement (e.g. variable name changes).
- Additions.
- Case issues fixed.
- Minor fixes (init ordering).
[CL 2172690 by Dmitry Rekman in Main branch]
