Remove trailing whitespace from some files
Add mobile support

Use divs in the boxes, set min-height instead of height for bottom div
(so that it can grow when the text wraps)
Get 404 image from Reddit
Fix for devices with thin screens (ex iPhone)
Check if base == 1

Without this check, the code will infinitely loop and tie up the
server. It's actually pretty nasty.
Merge branch 'master' of github.com:tschuy/arbitrary-converter into develop