replaced embedded google map with image of levine on small mobile devices, #perfmatters
update Jekyll version, and .gitignore
add progressive enhancement to improve performace on small screen devices

by adding embedded Google map only to larger screens
add more margin above section headings

to improve ui
added section and modal window for TGF Live
updated TGF Live

to begin on liveDate, also #perfMatters, progressively load/unload live iframe upon opening/closing of modal window
#perfmatters, cleaned up unnecessary/unused styles
replaced embedded youtube with TGF banner

to progressively embed youtube upon click, #perfmatters
fixed filename casing
added back pygment_trac.css
Merge branch 'gh-pages'