* better fixes for docs homepage
* fix tests
* create special route for docs homepage + cleanup existing code
* no need to create multiple docs parent paths
* useful comment
* add test for slug + doc home usage at the same time error
* remove confusing variable name
* fix tests by using same suffix as before for docs base metadata path
* metadata: use homePageId correctly for nested docs: the full docId (including /) should be used to compare against homePageId
* add folder/testNested test doc
* refactor a bit processMetadata, the home should be handled correctly for all versions
* Workaround to fix issue when parent layout route (DocPage) has same path as the child route (DocItem): see https://github.com/facebook/docusaurus/issues/2917
* revert homePageId
* remove test doc
* remove test doc
* add useful comment
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