File assets and the SHA files are uploaded to the new location. Files
when are users uses s3 are upload public read only. The copyfile task
uses only the existing SHA value.
This PR include major refactoring of the use of URLs. Strings are no
longer categnated, but converted into a URL struct and path.Join is
utlilized.
A new values.go file is included so that we can start refactoring more
code out of the "fi" package.
A