Notify makers when an order is taken (even if they left the site) about robosats

[Reckless-Satoshi]

After a closer look the telegram notifications might be the easiest/safest to implement, while not really that damaging to privacy. Deep linking can be used to facilitate Robot <-> Telegram client link, avoiding the need for a verification step in chat with the telegram bot.

I am assigning myself, hopefully it is ready in a couple of days.

[Reckless-Satoshi]

The last pull request merged introduced a messaging system using Telegram. Only two messages were created, and these are only for makers: 1) "Hi {maker_name} I will let you know when someone takes order {order_id}"; 2) "Your order was taken by {taker_nick}, visit {url+order_id} to continue".

When linking Telegram with RoboSats users are exposing their username. RoboSats DOES NOT LOG the telegram usernames, instead it stores the chat_id (unique integers that identify the chat robosat_bot <-> user). The chat_id can potentially be used to learn that multiple robot avatars belong to single entity (yet it requires access to RoboSats DB and some heuristics). In the frontend a dialog box has been introduced to notify users that linking telegram can potentially be detrimental for their anonymity (however, it is very useful!!).

If nothing comes up in the next few days, this issue will be closed.