style comments alert for users who aren't signed in
update styles/content for contributions intro section
update styles for comments/created date on post index page
remove border on button mixin
create variable for blue
add right arrow icon in 'create new…' buttons
move search inputs inside intro div
remove bootstrap row classes
update headers
add hover state and transition to item-title mixin
position user's gravatar next to their name on profile page
remove header
remove unused styles
remove bootstrap classes
increase padding in between list items on index pages
add misc comments styles