Added new field for User - a name. 

* Added new field for user - a name. 
* Refactored registering so the user has to input the name (beginning with a capital letter). 
* Moved the initials of the author to user. Also added a method called author to Question so we don't have to change all the views which display author (I'm displaying user.name as author now). 
* Edited forms so the Author cannot be input now. And most of all refactored tests (added test for User which now checks most of validations on author which was tested in Question before).
Somehow, the `author` column is still present in the generated `schema.rb` file. Did you run all your migrations before commiting the new `schema.rb` file? I can see the `RemoveAuthorFromQuestions` migration that should remove the `author` column, but it looks like your DB is not synchronised with your schema.rb.

You can run `rake db:drop db:create db:migrate` to re-synchronize migrations with schema with db (beware: it will drop your database!).