Adding 2% right margin to diptych panels (~10px) - resolves #4

Signed-off-by: Matt Bernhardt <mjbernha@mit.edu>
Changing height of front page tabs down to 230px to reflect content changes

Signed-off-by: Matt Bernhardt <mjbernha@mit.edu>
Pushing slideshow controls farther outside the content area to eliminate overlaps with text and images. This resolves #6.

Signed-off-by: Matt Bernhardt <mjbernha@mit.edu>