Revert "CORE-5386 Simplified convert fn metadata syntax."

This reverts commit 359d3ab3eb8db6cf54529eb60e021ca87a1828c0.
Revert "CORE-5386 Updated facepalm to allow conversions to accept a dir param."

This reverts commit 8fe7fcdadbfabd5cc3d90af05c911e5a92bc50f4.
CORE-5386 facepalm update to allow conversions to load sql files.

Figured out an easier way to let conversions load sql files from the unpacked temp dir, by using me.raynes.fs functions, rather than passing the dir in function params if the convert function has certain metadata.
CORE-5386 Added rating_listing view to conversion.