Should fix cascading delete issue (#3)

Reviewed-on: #3
Co-authored-by: Ezri Brimhall <ezri.brimhall@usu.edu>
Co-committed-by: Ezri Brimhall <ezri.brimhall@usu.edu>

database/users.go

@@ -50,7 +50,12 @@ func GetUser(dbConn *sql.DB, id string) (*User, error) {
 func FindOrSaveUser(dbConn *sql.DB, user *User) (*User, error) {
 	log.Println("finding or saving user", user.ID)
 
-	_, err := dbConn.Exec(`INSERT OR REPLACE INTO users (id, mail, username, display_name) VALUES (?, ?, ?, ?);`, user.ID, user.Mail, user.Username, user.DisplayName)
+	_, err := dbConn.Exec(`INSERT OR IGNORE INTO users (id, mail, username, display_name) VALUES (?, ?, ?, ?);`, user.ID, user.Mail, user.Username, user.DisplayName)
+	if err != nil {
+		return nil, err
+	}
+
+	_, err = dbConn.Exec(`UPDATE users SET mail = ?, username = ?, display_name = ? WHERE id = ?;`, user.Mail, user.Username, user.DisplayName, user.ID)
 	if err != nil {
 		return nil, err
 	}