Add link classes to slide title, update slide titles
Add ScrollSpy support
Fix ScrollSpy offset problem with fixed navbar
Fix anchor navigation by navbar
Tweak height on nav section pseudo-elements
Add smooth scrolling
Smooth scrolling selects only elements with class nav-section
Hash value updates properly on link click
Image thumbnail groups are converted to galleries
Add clearfix to thumbnail-group
Add background colour and title to thumbnail groups
Add thumbnails, remove unnecessary images, change image style to inline-block in thumbail groups
Add description for Cut the Power, game manual and report