Brought back bold typefaces from Google Fonts

Previously wasn't querying Google Fonts for the 600 (bold) font weight
Updated schedule list for responsive sizing
Centered main content
Fixed schedule typos
Normalized box padding
Added responsive styles for width, font size

1) Max browser width of 1200 (anything above this will get static-width content)
2) The body's font size moves down to 12px (since the body is the root "em", all "em" style sizes adjust to it)
3) Mobile devices now correctly size the website
Fixed body position from resizing header

Unfortunately there's no better way to do it
Added padding to bottom of page

Just me being picky. I think it looks good to scroll down to the bottom of a page and have a bit of empty space
Merge pull request #1 from sman591/css-improvements

CSS Improvements