Merge branch 'release/0.7'
spine item media overlay id property set
updated cfi library
Removed dynamic loading of html templates (limitation in ios webview)
Refactored Media Overlay model
Changed openBook function sygnature
Passing duration properties to MO
MO in progress
Initial media overlay player stop, play, pause
Text Sound synch in progress
Progress save
Merge branch 'release/0.9'
Stashing
Progress in MO support
Page turning
MO page flipping and synchronization bugs fixing
Support for MediaOverlayStatus feedback
MO Switch books bug fix
Spelling mistakes fixes
Spelling mistakes fixes
isMediaOverlayAvailable checks for visible mo element on spread now