Refactor Apache rewrite rules for script name access

[klsoft-web]

No description provided.

[samdark]

@klsoft-web would you please explain these changes? Thanks.

[klsoft-web]

@klsoft-web would you please explain these changes? Thanks.

The current rule only works if the script name contains the symbol '/' at the end of the URL.

For example, this works:
http://mysite/index.php/

Call sequence:

1. Apache redirect to 404.

This does not:
http://mysite/index.php

Call sequence:

1. Apache calls index.php.
2. index.php calls the Yii3 application.
3. The Yii3 application calls the NotFoundHandler.

The pull request resolves this issue.

[samdark]

Thanks.