add answers_controller and views setup factorygirl

- added answers_controller and crud actions
- added answer_form partiol
- changed routes: answer nested under questions
- answers_controller_spec WIP
make pry default console
remove pending specs
add factory_girl_rails
add partial to render flash messages
setup question and ansewr factories
add partial to render flash messages
TODO 1 failing test!
add random order to spec config
complete answers#create action and spec
add delete link for answer