fix love button on post card to display properly when a user isn't logged in
merge shawn into master
implement fixed header inside post card -- currently not working properly
display checkbox as solid if current user has voted on answer, otherwise display as no-fill
add Bevan font, style user signup page
add logo to sign in page
add logo to overlay menu
add padding to questions on front of card
fixed header on back of post card now working
header on back of post card now working -- merged into shawn branch