Merge pull request #18 from piwatake/master

Help Button
Made power-off disable help screen. Cleaned up some whitespace in index.html.
Reformatted help font/color
Merge pull request #20 from AlexanderPatino/patch-2

Reformatted help font/color
Added warning message for when Javascript doesn't work.
Select duds based on closeness to correct answer, added more possible words.
Made console hide old messages rather than overflow its container.
Fixed inconsistent font size between browsers.
Made memory view uppercase.
Removed hover sound.
opacity added for help.