First cut at using Mediawiki API to get the index for admin help
Fine tuning things:

- Only add strings if a COM_ADMIN string exists, this ensures we only list what we want
- Add some "debug" output to the CLI
- Add basic inflecting on strings where there are pluralization differences
- Adding some missing screens to the TOC
Update pagebreak.php

[#33055] makes no sense to keep the adding point; With > php5.5 it would create a notice, because the $row->toc doesn't exist at that specific time.
Make the TOC array key/value pairs with the original JHELP string as key and the COM_ADMIN string as value
Merge remote-tracking branch 'joomla/staging' into helpTOC
Doc blocks, don't import legacy libraries
Properly build out getCategoryMembers method
Merge branch 'staging' into helpTOC
Merge remote-tracking branch 'joomla/staging' into helpTOC
Check if inflected var has content
Add com_postinstall help screen
Rename retrieval script
Fix code style issues in JMediawikiCategories
Code Style Fixes
Code Style Fixes!
Code Style Fixes!
Code Style Fixes!
Code Style Fixes!
Merge pull request #2760 from puneet0191/staging

Code Style Fixes, Selenium System Tests
Merge pull request #2742 from oe1tkt/patch-1

[#33055] Update pagebreak.php;  If pagebreak added to article a Notice: Undefined property: stdClass::$toc in pagebreak.php is created