1) Added amt_from and amt_to variables to the site url (Bestchange functionality).

2) Rapira API has been supplemented with auto-payouts.

3) Supplemented manager rights settings.

4) Added the ability to create a unique url for static pages.

5) Added the ability to enter the "Receive" amount in the Telegram bot.

6) Added uploading of receipts in the Telegram bot, if the corresponding option is enabled.

7) Updatd exchange rate sources:
- Garantex has been replacd with Grinex.
- Reworked and updated: Binance, Bitdelta, Bitfinex, Bitstamp, Blockchain, Exmo, Okcoin, Poloniex, Privat24.
- Removed: Bittrex, Cryptonator, Localbitcoins, Kuna.
- Updated lists of supported currencies for all sources.

8) Minor additions and fixes:
- Fixed display of additional fields with select, radio and checkbox types in the Telegram bot.
- Added automatic refunding from the balance when canceling a completed exchange to the balance.
- Correct display of a large amount of groups in the direction settings.
- Correct return to changing exchange data in the template with the form (return from the second to the first step of the exchange).
- Fixes for automatic payments of the WebMoney API.
- Limiting the frequency of sending letters about file changes on the server (spam protection), messages in Telegram bot without restrictions.
- Adjustment of min/max exchange amounts in Telegram bot.
- Adjustment of calculator when entering the amount "Receive".
- Corrections in templates.