Removes ForMd macro and submodule.

drbunsen has granted permission to *include* ForMd in this library. It is therefore not required to have a separate installation of the script anymore.
Renamed Link Inline to References macro.

"Link Inline to References" becomes "Flip Link Style (ForMd)". It is now possible to simply "flip", as opposed to go just one way.
Replaced shell script to include ForMd in Flip Link Style macro.
Correctly folds actions in Flip Link Style.