Add the crypto libary again. Import it using requirejs.
It was being used in the encryption handler.
This reverts commit 84bd54fbb8a7f3097a0bf4ee80248ace6481fa05.
Use alternative method for loading crypto library using requirejs.
Update sub module.
Update sub module.
Merge branch 'develop' of https://github.com/readium/readium-js into feature/pagination

Conflicts:
	epub-modules/Readium.js
	epub-modules/epub-renderer/src/readium-shared-js
- pagination
- submodule