hide section/chapter headers on odd/even pages
don't ste page sizes if autostart is not defined
don't list pages in toc if undefined
provide for Chrome < 29
remove pre-Chrome 29 work-around, as Chrome 29 has been released
add Safari 6.1/7.0 support
adjusted flexbox to work with browsers that don't use prefixed declarations
changed name as bookjs.net was never updated