Add a "Is Deprecated" toggle to edit service #1198
Description
As of right now, contribs have to add a "(DEPRECATED)" to the service name to mark it as deprecated - I feel like it'd be better if we have a toggle for this instead.
We need to add a new column to services, deprecated_since, a date indicating it has been deprecated, null meaning it has not.
Can also be a boolean - I think a date would be nice for periodic cleaning jobs.
Deprecated services should look different in phoenix and maybe disallow edits to deprecated services (like the user can't add new points, etc)