* Add a check in Timely command that removes the reminder button if there already is a timely reminder in DB.
* Add ReminderType in db/models. As well as migrations.
* Set Normal reminders to be of `ReminderType.User`, and Timely reminders to be of `ReminderType.Timely`
- 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