Lots more changes

Using Bootstrap for CSS

Added pagination to all article lists

Added about page placeholder

Revamped subscription interface

Preliminary version of collaborators (inefficient query, ordered alphabetically rather than by # of collaborations)

search bar searches keywords, author last names

Todo:

Need to finalize the feed model (social feeds or personal feeds)

Toggling of feed visibility

Add categories back to everything

User preference page

live preview of results

email backend

maybe add support for bookmarks, likes, and read/unread in feeds