Adding media controller, 1 webm/compose form allowed, previews generated

app/controllers/media_controller.rb

@@ -0,0 +1,13 @@
+class MediaController < ApplicationController
+  before_action :set_media_attachment
+
+  def show
+    redirect TagManager.instance.url_for(@media_attachment.status)
+  end
+
+  private
+
+  def set_media_attachment
+    @media_attachment = MediaAttachment.where.not(status_id: nil).find(params[:id])
+  end
+end