Make html edits

* Add headers to sign in/sign up
* Pluralize follower/following counts
* Add home navigation
* Make minor spacing/tagging changes
Order shout search results chronologically
Fix follower count

* Change follower count partial from current_user to user
* Pass in current_user from dashboard
* Pass in @user from user
Merge pull request #1 from HayleyCAnderson/elijah_hayley

elijah_hayley