Fixed up the details panel name area to be aware of in world component editing.
Fixed up usage of the details panel name area to use new enum based usage flag for name areas
[CL 2419254 by Ben Marsh in Main branch]
- 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]
