By using this Plugin you can change your website's language to Persian. Moreover, in this Plugin can provides the translation of all lang files, the skin of system works as rtl also it makes the data as Jalali date & Persian Date & time Picker.
For activate this Plugin just try to add XML files. in this way you can use it very easy. The interpretation is on github website.
Download Plugin: https://github.com/sEh3an/dlefa