IRT unit shown to the order-maker is incorrect both when language is set to English and persian/farsi.

[mgatmiri]

When the language is set to English, and someone puts an order in IRT, the unit is shown to the order-maker incorrectly as "ریال" AKA IRR. It should be shown as "تومان" AKA IRT.

Steps to reproduce the behavior:

1. Set language to Eng
2. Place an order in IRT
3. When someone accept the order, the bot message to notify you shows the fiat amount correctly, but the unit should be in IRT "تومان" instead of IRR "ریال"

[mgatmiri]

Seems the issue is relevant when lang is set to farsi too:

[grunch]

closing it via #716