Many little enhancements, mostly style

app/decker.hs

app/tester.hs

resource/deck.html

resource/ff-quest-catalog-template.md

resource/ft-quest-catalog-template.md

resource/handout.html

resource/mc-quest-catalog-template.md

resource/page.html

resource/support/font-awesome-4.6.3/css/font-awesome.css

resource/support/font-awesome-4.6.3/css/font-awesome.min.css

resource/support/font-awesome-4.6.3/fonts/FontAwesome.otf

.../support/font-awesome-4.6.3/fonts/fontawesome-webfont.eot

.../support/font-awesome-4.6.3/fonts/fontawesome-webfont.svg

.../support/font-awesome-4.6.3/fonts/fontawesome-webfont.ttf

...support/font-awesome-4.6.3/fonts/fontawesome-webfont.woff

...upport/font-awesome-4.6.3/fonts/fontawesome-webfont.woff2

resource/support/reveal.js/css/theme/htr-slides.css

src/embed.hs

src/filter.hs

src/test.hs