Make input-slider work for Firefox
1. Use injected playback object to hold presentationMode
2. Add custom event 'input'
3. fix deck showing sites during playback. deck finds next slide if at the end of in /new
4. set currentSequence to active for css class
5. fix updateScrollTop
6. fix Firefox 100% height on deck
1. make sure to set/reset properties in PresentationRoute
2. fix range input css for firefox
3. use font awesome glyphs
Update Index.
1. Fix url shortener
2. don't put first sequence for /new
1. manually copy bootswatch
2. add targets to external links