//Method: POST (New)
//Parametes: title, content, meta
//Return: {"ret":true|false, "rowid":"[rowid]"}

//Method: POST (Renew)
//Parametes: rowid, title, content, meta
//Return: {"ret":true|false, "rowid":"[rowid]"}

//Method: POST (Delete)
//Parametes: rowid
//Return: {"ret":true|false, "rowid":"[rowid]"}