Fix: shortest selection in commission filter not working

module/base/filter.py

@@ -41,8 +41,9 @@ class Filter:
         out = []
         for raw, filter in zip(self.filter_raw, self.filter):
             if self.is_preset(raw):
+                raw = raw.lower()
                 if raw not in out:
-                    out.append(raw.lower())
+                    out.append(raw)
             else:
                 for index, obj in enumerate(objs):
                     if self.apply_filter_to_obj(obj=obj, filter=filter) and obj not in out:

module/commission/project.py

@@ -19,7 +19,7 @@ COMMISSION_FILTER = Filter(
         '(\d\d?.\d\d?|\d\d?)?'
     ),
     attr=('category_str', 'genre_str', 'duration_hm', 'duration_hour'),
-    preset=('shortest')
+    preset=('shortest',)
 )
 SHORTEST_FILTER = """
 0:20 > 0:30