Update a few patch links to modern format

Author: JelteF

pgcommitfest/commitfest/feeds.py

@@ -30,12 +30,7 @@ def item_description(self, item):
         )
 
     def item_link(self, item):
-        if self.cfid:
-            return "https://commitfest.postgresql.org/{0}/{1}/".format(
-                self.cfid, item["patchid"]
-            )
-        else:
-            return "https://commitfest.postgresql.org/{cfid}/{patchid}/".format(**item)
+        return "https://commitfest.postgresql.org/patch/{patchid}/".format(**item)
 
     def item_pubdate(self, item):
         return item["date"]

pgcommitfest/commitfest/templates/mail/patch_notify.txt

@@ -3,7 +3,7 @@ have received updates in the PostgreSQL commitfest app:
 
 {%for p in patches.values %}
 {{p.patch.name}}
-https://commitfest.postgresql.org/{{p.patch.patchoncommitfest_set.all.0.commitfest.id}}/{{p.patch.id}}/
+https://commitfest.postgresql.org/patch/{{p.patch.id}}/
 {%for h in p.entries%}
 * {{h.what}} by {{h.by_string}}{%endfor%}