Add security rules in firebase auth and client side
Add security rules
Move css files to same directory as index page
Add upvote image
Implement first attempt at reply handling
Implement successful reply handling
Structure reply data under questions

When replies are added, write them to the firebase location of the
parent question
Add CSS rules for replies
Add replies to the DOM when they are added
Merge branch 'master' into gh-pages

Conflicts:
	html/index.html