Reorganize css and jQuery locations in base.html

The .css file wasn't being found, and the jQuery didn't seem
to be included properly until I made these changes.
Integrate friend, unfriend, follow, unfollow backend with frontend

Currently, friending, unfriending, following, and unfollowing have been
integrated with search results.
Fix syntax error in author model
POST request for editing profile implemented.

I still need to implement GET, but that should be straightforward.
Update tests for author Relationships model
Edit Profile front end and back end implemented

No unit tests just yet, still trying to figure out how to better test this besides manual testing.
Merge branch 'master' of https://github.com/awwong1/CMPUT410-Project
Minor HTML cleanup

I have my reservations about base.css.  I dislike the float: left on all divs, as it is causing a lot of needing clear-lefts and spans just to counteract it all.  But for now, I have tried to minimize any use of classes so there is less pain in refactoring later.
GET Profile implemented

User's profile page now shows his/her first/last name, or username, plus About Me content.  Shows some placeholder text if About Me isn't filled in yet.
Merge branch 'master' of https://github.com/awwong1/CMPUT410-Project into post