Added zoom to Reader UI
Zoom work
Submodule update
changes to get it working alongside the scrollable view
submodule update
call to isCurrentViewFixedLayout to chek for fixed layout view type
introduced auto option for synthetic spread in settings dialog
support for rendition layout and rendition flow properties
introduced separear isSyntheticSpreadDouble and isSyntheticSpreadSingle to settings
Merge branch 'feature/zoom' into develop

Conflicts:
	lib/Readium.js
	readium-js
updated dependency
updated dependency
introduced named values for scroll and syntheticSpreade settings froperties
Settings dialog cleanup
updated dependency
Merge branch 'develop' into feature/rendition_selection

Conflicts:
	lib/Readium.js
Merge branch 'feature/rendition_selection' into develop
updated dependency