added search by title (before viewing solution)
cleaned up search_by_title after watching solution
search bar added
recent_videos method w/tests (pre-solution)
recent videos method revision after solution
added users, wired up registration & sign-in pages (pre-solution)
added users, wired up registration & sign-in pages (post-solution)
added authentication features (pre-solution)
minor revisions to authentication from solution
Merge pull request #3 from Nissl/mod1

I think this is in pretty good shape, particularly as I checked it against the solutions. On to week 2!