show domain hostname for resources without pathnames (fixes #47)
clean up typeFilter
Merge pull request #48 from cvan/root-name

show domain hostname for resources without pathnames (fixes #47)
Merge pull request #49 from cvan/type-cleanup

clean up typeFilter, fix lowercased external URLs
simplify header when page is <iframe>'d
Merge pull request #51 from cvan/iframed

simplify header when page is <iframe>'d