[Help Editor] Fix array issues caused by super confusing code #2969
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Fix help editor so that parent help topics are successfully retrieved
Prevent generation of PHP Notices relating to non-existing array keys
Rename variables to be descriptive
Add lots of comments to make code more understandable
I know normally we separate cleanup/refactoring from bug fixes but I was unable to fix the bug without first renaming and refactoring the code to make it clear what was actually being accomplished.
I've marked this as
17.1
because it is a bug fix but if this needs to go to17.2
because of refactoring changes that's also fine.