New bot features

Avgeek Telegram Bot

• Now you can change the System of Units using the /changeunits command to
  • Metric
    • Altitude - meters
    • Distance - kilometers
    • Speed - kilometers per hour
  • Imperial
    • Altitude - feet
    • Distance - miles
    • Speed - miles per hour
  • Aviation
    • Altitude - feet
    • Distance - nautical miles
    • Speed - knots
• You can now send feedback using the /feedback command
• Now when you select a language, its emoji will be displayed instead of its name

Bugfix

• Fixed a bug when users who don't have username set in Telegram were not added to the bot.
• Fixed a bug where even if a user does not have an airport installed, he still receives notifications from the bot.

Bot Admin Panel

Now the bot has an admin panel based on Spring Boot Admin, but finalized for the bot.

With the admin panel you can track all users and information about them, statistics of command usage, as well as see user feedback.
However, one of the main features of the admin panel is that it is now possible to send custom messages to all users.