add data-start-indexv #427
merge notes float fix and support for multiple fragments with same index
fix previousFragment, was hiding in reverse order #435
upgrade to 2.5.0
-ms-touch-action for #450
float fix in notes-server plugin
viewport meta to fit notes window on ipad
Merge remote-tracking branch 'upstream/dev' into dev

Conflicts:
	js/reveal.js

Replaced my changes with upstream version.