[#465] project collaborators page

app/controllers/projects/collaborators_controller.rb

@@ -2,7 +2,6 @@ class Projects::CollaboratorsController < Projects::BaseController
   respond_to :html, :json
 
   before_action :authenticate_user!
-  load_resource :project
   before_action :authorize_collaborators
 
   before_action :find_users

app/models/collaborator.rb

@@ -38,6 +38,7 @@ class Collaborator
   end
 
   def initialize(args = {})
+    return false if args.blank?
     args.to_options!
     acc_options = args.select{ |(k, v)| k.in? [:actor, :project, :relation] }
     acc_options.each_pair do |name, value|