Merge branch 'gh-pages'
Cover mode in place of small window mode

Generics buttons + animate on hover
introEnigma centred + start/end chronology fix
Change helpScreen size + touch event for jQ-ui
Small fix for tablets
Change chapter loading + beautify CSS
Fix typo
Fix last commit + endEnigma update to center
Merge branch 'gh-pages'
Merge branch 'Alex-D-master'