Add content index page to _index.md

[Ja7ad]

All content of index page is in layout file index.html, we need to make internal shortcode for items in _index.md.

Short code for add, remove and modify each box:

Short code for modify text and reorder data from 1~4:

Short code for show news room and configurable for (total news, show image or no, show description or no)

Short code to change text and buttons

Short code to show or hide counts:

[alidevjimmy]

Shortcodes are made for md files and we can't use them in layout files.
Instead we can use partial

[Ja7ad]

Shortcodes are made for md files and we can't use them in layout files. Instead we can use partial

Ok use partial