exposed URI library in to the global namespace for shared-js to use
updated dependency to shared-js
Merge pull request #25 from readium/feature/epub_fetch-refactoring

Feature/epub fetch refactoring
Merge branch 'develop' into feature/deep_link_cfi_resolve

Conflicts:
	epub-modules/epub-renderer/src/readium-shared-js
updated dependency
submodule ref
submodule ref
submodule up
submodule update
submodule ref
submodule ref
submodule ref
submodule ref
submodul
submodule ref
submodule
Move content document fetching logic from iframe_zip_loader to publication_fetcher.
Extract content document related logic to a new content_document_fetcher submodule.
Extract deobfuscation/decryption logic to a new encryption_handler submodule.

Small naming fixes in publication_fetcher.
Resource fetcher naming consistency fixes.
Elevate the resource cache onto the global EPUB-wide level.