Base member creation being added in this commit notes to follow
struct Member has had its field types changed to db_types::* types
Member::to_json was added to support simple json serialization into responses
struct InsertableMember added because `id` is generated by SQL for us
- this means we have to do two queries 1 to insert and 2 to fetch
- mysql_async does not provide an inlined way of fetching a recently added row
func general_new_user is only checking for a `name`parameter
- falls back to a basic default name for those that don't set a name on jooin
- handles its own sub errors so the main dispatcher doesn't care about after move
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