- Fixed some potential causes for ratelimit due to default message retry settings

- Fixed a patron rewards bug caused by monthly donation checking not accounting for year increase
- Fixed a patron rewards bug for users who connected the same discord account with multiple patreon accounts

src/NadekoBot/Db/NadekoContext.cs

@@ -431,7 +431,8 @@ public abstract class NadekoContext : DbContext
         modelBuilder.Entity<PatronUser>(pu =>
         {
             pu.HasIndex(x => x.UniquePlatformUserId).IsUnique();
-            pu.HasKey(x => x.UserId);
+            pu.HasKey(x => x.Id);
+            pu.HasIndex(x => x.UserId).IsUnique(false);
         });
 
         // quotes are per user id