Fix #5078: Pixiv booth upload broken.

Allow image URLs from https://booth.pximg.net to be uploaded. Fix bug
where Booth.pm URLs were incorrectly caught by the Pixiv extractor.

test/functional/uploads_controller_test.rb

@@ -360,6 +360,8 @@ class UploadsControllerTest < ActionDispatch::IntegrationTest
         should_upload_successfully("http://wwwew.web.fc2.com/e/405.jpg")
 
         should_upload_successfully("http://www.tinami.com/view/1087268")
+
+        should_upload_successfully("https://booth.pximg.net/4ee2c0d9-41fa-4a0e-a30f-1bc9e15d4e5b/i/2586180/331b7c5f-7614-4772-aae2-cb979ad44a6b.png")
       end
     end
   end

test/unit/artist_url_test.rb

@@ -200,6 +200,12 @@ class ArtistURLTest < ActiveSupport::TestCase
       assert_equal("http://www.instagram.com/itomugi/", url.normalized_url)
     end
 
+    should "normalize Booth.pm urls" do
+      url = create(:artist_url, url: "http://mesh-mesh.booth.pm/items/746971")
+      assert_equal("https://mesh-mesh.booth.pm", url.url)
+      assert_equal("http://mesh-mesh.booth.pm/", url.normalized_url)
+    end
+
     context "#search method" do
       subject { ArtistURL }