submodule
Update submodule
submodule
Merge branch 'develop' of github.com:readium/readium-js-viewer into develop

Conflicts:
	lib/Readium.js
build
fixes #134 (getWidthFactor() shifts scrollview to the right, page gets clipped)
build
added missing spanish #130
Additional div for responsive Media Overlays UI controls was not getting dark background colour during playback
submodule
submodule
minor adjustment: grunt express http server did not provide same CSS stylesheets as cloud reader / chrome app (cascade order)
added missing aria roles (screen reader accessibility), addresses #145
fixes modal keyboard tab navigation which was escaping the dialog context into the hyperlinks of content documents #147
Merge remote-tracking branch 'origin/develop' into feature/textWidthMargins

Conflicts:
	lib/ReaderSettingsDialog.js
	readium-js