Mod2

I have updated video show page with reviews and its form.

1) new seeds, stronger and refactored
2) sessions_controller spec
3) users_controller spec
4) videos_controller spec
5) reviews_controller spec
6) add fabrication gem, faker gem
7) add fabricators for user, category, video, review models
8) add total_reviews count method, spec
9) add average_rating method, spec
10) add authentication spec for reviews and videos controller

phew :) all done without solutions, hope it is OK.

Please, approve.