added a route to update the status'
added updates to validate content of items, added routes for comments and status updates, added variable in show view to ensure the correct page is being rendered
added ability for users to post on their own wall or friends, added ability for users to comment on their own status updates or their friends
Merge pull request #13 from zachmokahn/status_updates_on_users_walls

This merge adds functionality to post statuses on your wall and the wall of your friends. It also gives the ability to comment on your statuses and the statuses of others.

Bugs introduced in this code: 

Error messages regarding blank comments show up under every form for adding comments (eg 2 statuses are on a user's profile page, 2 forms for comments will display, and when an error shows up on form submission, it is displayed next to both comment forms)

There is no space between a user's name and their comment after they had a comment.

We are merging imperfect code in favor of allowing other members to continue working on these (high priority) controllers, views, and models.