Send an email (to support) when a user is reported for spam

app/controllers/abuse_reports_controller.rb

app/controllers/admin/application_settings_controller.rb

app/mailers/abuse_report_mailer.rb

app/views/abuse_report_mailer/notify.text.haml

app/views/admin/application_settings/_form.html.haml

...te/20151008143519_add_admin_notification_email_setting.rb

db/schema.rb

spec/controllers/abuse_reports_controller_spec.rb