Revert "Added actor, actress, artist and artistmovierelation.py"

This reverts commit 061f167725cddc6cb9cd500267e1dd4cda5b6263.
Revert "Revert "Added actor, actress, artist and artistmovierelation.py""

This reverts commit d4848d2eeaed42c005a5518de5fa40e9b3e6ce2b.