Added a new version that removes need to check if group was added to enum items, as it isn't needed.

Added new version to work on trunk again and change keymaps.

Added a new version that fixes up some comments in the group operators, and also adds the new operators to the view3d's object menu.

Added a new version to work on trunk again.

This latest version missed a commit and is broken. Will upload a correct version later when I'm back at my main computer.

Uploaded latest version which should work on trunk.

Added another version after several brakages from trunk again.

I created a video demonstrating the patch a couple weeks ago: https://www.youtube.com/watch?v=93ipWdujiaw