Make PromoteLinkNew subclass of PromoteLinkBase.

Not needed at this point, but for consistency.

r2/r2/lib/pages/pages.py

@@ -3581,8 +3581,6 @@ class PromotePage(Reddit):
         kw['show_sidebar'] = False
         Reddit.__init__(self, nav_menus=nav_menus, *a, **kw)
 
-class PromoteLinkNew(Templated):
-    pass
 
 class PromoteLinkBase(Templated):
     min_start = None
@@ -3631,6 +3629,10 @@ class PromoteLinkBase(Templated):
         self.collections = [cl.__dict__ for cl in Collection.get_all()]
 
 
+class PromoteLinkNew(PromoteLinkBase):
+    pass
+
+
 class PromoteLinkEdit(PromoteLinkBase):
     def __init__(self, link, listing, *a, **kw):
         self.setup(link, listing)