Function saveNote

save note to a relation TODO: add :params

Package: CT-ChurchDB
Located at system/churchdb/churchdb_db.php

Parameters summary

`integer`	`$rel_id`	, relation id
`string`	`$note`
`integer`	`$cmt_viewer = 0`	, default = 0 (means all), id for auth to view this note
`string`	`$rel_name = "person"`	, default = "person"

`string`	ok