Moving "Haft Lang - Theme" from h.json to t.json.

Will be changing plugin listing name to "Theme - Haft Lang" to follow the general theme naming convention.
Added "Theme - Haft Lang".

The plugin was previously named "Haft Lang - Theme" in h.json. It is now moved to t.json to take the name "Theme - Haft Lang" to follow the general naming convention of themes: "Theme - <theme_name>"
Added previous_names to "Theme - Haft Lang"
Updated Haft Lang listing labels.
Merge pull request #3677 from amirrustam/master

Moved Haft Lang theme from h.json to t.json