Description:
Implement MVVM(Model View ViewModel) architecture in the project.

Describe the bug
When we add links to a post, they're added to the references at the bottom. However, email links shouldn't be added.

To Reproduce
Steps to reproduce the behavior:

1. Create a new post
2. Add a link to the content
3. Save your changes
4. Navigate to the recently created post
5. Scroll down to the references list
6. You'll see the email link there

**Expected be

Description of feature

More details are needed for users such as a added timestamp, last signed in timestamp and password expiration date. These three columns should be added to the user table.