Merge pull request #20 from andredempsey/nicole

Nicole
added activity, transactions, and distributions to user dashboard; need to update charity selection process with sliders and ajax
remove obsolete user_sign_up blade
migration and database seeder updates to handle twitter token and authorization
changes made to charites controller, model, form
Merge pull request #21 from andredempsey/andre

Andre
fixing conflicts
Merge pull request #22 from andredempsey/andrew

changes made to charites controller, model, form
resolving conflicts