added pixiv proxy, report mailer

app/models/report_mailer.rb

@@ -0,0 +1,7 @@
+class ReportMailer < ActionMailer::Base
+  default :host => Danbooru.config.server_host, :from => Danbooru.config.contact_email, :content_type => "text/html"
+  
+  def moderator_report(email)
+    mail(:to => email, :subject => "#{Danbooru.config.app_name} - Moderator Report")
+  end
+end