Merge pull request #1 from tiger-swallowtails-2014/mike

part of question view
successfully display the last 10 questions on index page
Update seed file
Successfully sort questions by trending, most recent, and highest voted
Modify vote model to allow mass-assign on vote_context_id attribute
Modify response model to allow mass-assign on response_context_id attribute
Refactor seed file
Remove num_of_votes column from votes table
Merge pull request #2 from tiger-swallowtails-2014/william

William
commit for merge
solved merge conflict: