FIX: Properly support defaults for upload site settings.

db/fixtures/010_uploads.rb

@@ -0,0 +1,17 @@
+{
+  -1 => "d-logo-sketch.png",
+  -2 => "d-logo-sketch-small.png",
+  -3 => "default-favicon.ico",
+  -4 => "default-apple-touch-icon.png"
+}.each do |id, filename|
+  path = Rails.root.join("public/images/#{filename}")
+
+  Upload.seed do |upload|
+    upload.id = id
+    upload.user_id = Discourse.system_user.id
+    upload.original_filename = filename
+    upload.url = "/images/#{filename}"
+    upload.filesize = File.size(path)
+    upload.extension = File.extname(path)[1..10]
+  end
+end