CODING_18722_ACTIVE_DEACTIVE_POST

- [x] Controller
  - [x] write function put_active_post
  - [x] write function put_deactive_post
- [x] model
  - [x] write function update_status
Use constants instead of magic numbers.
We should create a new constant such as ACTIVE_STATUS = 1, INACTIVE_STATUS = 0.
These can be share for other objects such as Users etc.