Support reading, writing and recording of fallback resources
Support the collectiong of fallback resources per permutation
Update test as now sections are not created if they are empty
Add support for the configuration property appcache_fallback_files that sets up fallback resources
Record latest change
Bump version in preparation for next release
Add some basic documentation for fallback resources
Merge branch 'master' of https://github.com/realityforge/gwt-appcache