support for mathjax
updated MathJax to 2.3, slim copy feat. MathML input, SVG output, STIX fonts
Merge pull request #34 from pkra/feature/mathjax

updated MathJax to v2.3
Merge branch 'develop' into feature/mathjax

Conflicts:
	lib/Readium.js
	readium-js
Merge branch 'develop' into feature/mathjax

Conflicts:
	lib/Readium.js
	readium-js
split two mathjax options: multiple files, single file.
set single file option as a current one
Added zoom to Reader UI
Zoom work
Submodule update
changes to get it working alongside the scrollable view
submodule update
loading mathjax on demand
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