Media UI v1 (#17)

* Updated comments

* Added basic media tables to sources#show

* Adds a very basic listing and show page for media

lib/pinchflat_web/controllers/media/media_item_controller.ex

@@ -0,0 +1,11 @@
+defmodule PinchflatWeb.Media.MediaItemController do
+  use PinchflatWeb, :controller
+
+  alias Pinchflat.Media
+
+  def show(conn, %{"id" => id}) do
+    media_item = Media.get_media_item!(id)
+
+    render(conn, :show, media_item: media_item)
+  end
+end