Fix search facility (#143)

[mjtko]

This PR fixes the search facility by setting current-user in the search view (fixes #143).

[gabceb]

I think this is completely fine but why not just add this to user.rb

def as_json(options = nil)
     super(:only => [:id, :username, :email, :first_name, :last_name, :authentication_token, :gravatar_hash])
end

and then just call current_user.to_json

[gabceb]

This way we can also use this on controllers (I know there is some controller in there doing some crazy hash merge on user but I cannot remember where is it :) )