added some styling, create challenge button to nav-bar
functionality on user/show page
Merge branch 'dev'

adding merge
Merge branch 'master' of https://github.com/mjminc/project2

pulling newest pulls
Merge pull request #34 from marklc44/master

images and balances updating with ajax on show page
good enough styling on the hero, revisit if time
date format done
Merge branch 'master' of https://github.com/mjminc/project2