MOB-2214: Log POI updates to taskQueue

@SebastianMarzjan could you please take a look too
```
mysql> EXPLAIN select `poi`.`id`, `poi`.`name`, `poi`.`description`, `poi`.`link`, `poi`.`photo`, `poi`.`lat`, `poi`.`lon`, `poi`.`created_on`, `poi`.`created_by`, `poi`.`updated_on`, `poi`.`updated_by`, `poi`.`link_title`, `poi`.`poi_category_id`, `poi_category`.`name` as `poi_category_name`, `poi_category`.`parent_poi_category_id`, `poi`.`map_id`, `map`.`city_id`, `map`.`tile_set_id`, `map`.`created_on` as `map_created_on`, `map`.`created_by` as `map_created_by` from `poi` inner join `poi_category` on `poi`.`poi_category_id` = `poi_category`.`id` inner join `map` on `poi`.`map_id` = `map`.`id` where `poi`.`id` =2;
+----+-------------+--------------+-------+---------------------------------+---------+---------+-------+------+-------+
| id | select_type | table        | type  | possible_keys                   | key     | key_len | ref   | rows | Extra |
+----+-------------+--------------+-------+---------------------------------+---------+---------+-------+------+-------+
|  1 | SIMPLE      | poi          | const | PRIMARY,poi_category_id,poi_map | PRIMARY | 4       | const |    1 |       |
|  1 | SIMPLE      | poi_category | const | PRIMARY                         | PRIMARY | 4       | const |    1 |       |
|  1 | SIMPLE      | map          | const | PRIMARY                         | PRIMARY | 4       | const |    1 |       |
+----+-------------+--------------+-------+---------------------------------+---------+---------+-------+------+-------+
3 rows in set (0.01 sec)

```