added methods to IndexManager to support transition to storymaker download classes
added methods to IndexManager to support transition to storymaker download classes

StoryMaker/storypath,StoryMaker/storypath,n8fr8/storypath,scalio/storypath,n8fr8/storypath,scalio/storypath,n8fr8/storypath,StoryMaker/storypath,scalio/storypath