ea84b0e4ac
This commit modifies the "New Action" operator to always stash the old action before it creates a new one. As a result, the old active action will now have a proper user of sorts after the new one is created, preventing previously created actions from being lost. Now that the New operator does this, it can be used for the Action Editor header AND NLA Editor (Animation Data Panel -> Active Action) again. The "stash and create" operator is somewhat redundant at this point as a result.