Update Users Section

Completed Section 9.1
End of Day Save - 5-9-13
Pagination
Finish updating users
chap 10 not working
Revert "chap 10 not working"

This reverts commit d3ee6dcf97555b9d6b0eccd8239ba63a8dac38a0.
Eliminate unneccessary assignment
10.3.2 Creating microposts
10.3.3 A proto-feed
Add user microposts