deviantart: fix artist finder for profile urls missing the 'www'.

Fix the artist finder to work when the profile url in the artist entry
is missing the 'www'. Example:

  https://deviantart.com/noizave
  https://www.deviantart.com/noizave

app/logical/sources/strategies/deviant_art.rb

@@ -24,6 +24,12 @@
 # * https://noizave.deviantart.com/art/test-post-please-ignore-685436408
 # * https://www.deviantart.com/deviation/685436408
 # * https://fav.me/dbc3a48
+#
+# Profile URLs:
+#
+# * https://noizave.deviantart.com
+# * https://www.deviantart.com/noizave
+# * https://deviantart.com/noizave
 
 module Sources
   module Strategies
@@ -40,7 +46,7 @@ module Sources
       PATH_ART = %r{\Ahttps?://www\.deviantart\.com/#{ARTIST}/art/#{TITLE}-#{DEVIATION_ID}\z}i
       SUBDOMAIN_ART = %r{\Ahttps?://#{ARTIST}\.deviantart\.com/art/#{TITLE}-#{DEVIATION_ID}\z}i
 
-      PATH_PROFILE = %r{\Ahttps?://www\.deviantart\.com/#{ARTIST}/?\z}i
+      PATH_PROFILE = %r{\Ahttps?://(www\.)?deviantart\.com/#{ARTIST}/?\z}i
       SUBDOMAIN_PROFILE = %r{\Ahttps?://#{ARTIST}\.deviantart\.com/?\z}i
 
       def self.match?(*urls)
@@ -111,7 +117,7 @@ module Sources
       end
 
       def normalized_for_artist_finder?
-        url =~ PATH_PROFILE
+        url == normalize_for_artist_finder
       end
 
       def normalizable_for_artist_finder?

test/unit/sources/deviantart_test.rb

@@ -229,5 +229,14 @@ module Sources
         assert_match(%r!"Print available at Inprnt":\[http://www.inprnt.com/gallery/teemutaiga/kisu\]!, @site.dtext_artist_commentary_desc)
       end
     end
+
+    context "An artist entry with a profile url that is missing the 'www'" do
+      should "still find the artist" do
+        @site = Sources::Strategies.find("http://noizave.deviantart.com/art/test-post-please-ignore-685436408")
+        @artist = FactoryBot.create(:artist, name: "noizave", url_string: "https://deviantart.com/noizave")
+
+        assert_equal([@artist], @site.artists)
+      end
+    end
   end
 end