Minor changes to S3 uploader (WIP), Documentation updates

 # What's New?

 * Still working on S3 upload issues
 * Added documentation to certain artifacts that might be confusing to new contributors.
 * Pulled unneeded junk from asset pipeline

Overall, not a whole lot in the PR. I will work on getting paperclip integrated next (there were some technical issues on our side with S3 that slowed us down).