adding StaticHandler and loading templates and static resources from current package
add default template and static data to be included in the pywb package
add test for custom static route
fix html_rewriter missing ; on entities
js rewriter: only rewrite full document.domain
PathIndexPrefixResolver using binsearch on path index, for #9
resolvers moved to replay_resolvers.py
improve path-resolver logic: each resolver returns an array of possible
files (could be from primary or secondary storage).
then, iterate over all possible files from all resolvers until
a successful load, or raise exception if all failed
