Add the Wilson score and width sort methods

Author: nullforce

derpibooru/sort.py

@@ -38,8 +38,10 @@ def methods(self):
     sorting_methods = {
       "created_at",
       "score",
+      "wilson",
       "relevance",
       "height",
+      "width",
       "comments",
       "random"
     }

tests/test_random_parameters.py

@@ -4,8 +4,10 @@ def test_sorting_methods():
   sorting_methods = {
     "created_at",
     "score",
+    "wilson",
     "relevance",
     "height",
+    "width",
     "comments",
     "random"
   }