fix ipad designs

There is 1 freaking pixel between the sm and xs breakpoints in bootstrap, and luckily that is right where iPad lands..  It's almost impossible to notice it if you're testing reflexive in a desktop browser.

Anyways, this fix shifts the iPhone designs down 1 pixel so that they don't apply to iPad.  Now the iPad just gets the regular desktop interface.  I think that's *fine* - it might be nice to have custom iPad styles, but I don't think that'll be necessary for a long time.

Solves #257