Remove bugs and refine the functionality of the site

The project is on my local machine under OpenServer.

Stack:

Yii 2/ 2.0.10

PHP 7.1

Postgresql 9.6

elasticsearch

https://docs.google.com/spreadsheets/d/1YDWXmnW8o6yGBAbeaiDELuMypZBQUa8ZnyXrvL37uFk/edit#gid=878523853

In the "layout" section, only the tasks highlighted in red are relevant

"functional and logic" - all tasks

"refinement" - all tasks