Add loading progress bar
Forgot to add coffeescript
Split the role of allContent into 2 files

allContent only serves to have a canonical set of Models.

epub-container contains the load code for META-INF/container.xml
Remove now-unnecessary load call
Cleaning up EPUBContainer

Making it a tree was a mistake; OPF children would have their root
changed when they were added to this container
Add uuids to new resources and HTML files
When models are added to the manifest update the opf file
Image uploading works