add in manager role

app/helpers/application_helper.rb

@@ -19,6 +19,7 @@ module ApplicationHelper
     options_for_select([
                          %w(Reviewer reviewer),
                          %w(Recruiter recruiter),
+                         %w(Manager manager),
                          %w(Admin admin)
                        ], disabled: "-", selected: (val.blank? ? '' : val))
   end