New Widgets and new exchanges preparation

Updates:
- Refactoring of the database and services to connect new exchanges
- New graphical widget: Profit distribution by trading pairs (spot).
- New graphical widget: Profit distribution by trading pairs (futures).
- New graphical widget: Balance Distribution by Assets/Coins (spot)
- New graphical widget: Balance distribution by assets (futures)
- UI Refactoring/redesign of the board management menu
- New feature to add labels on trades: Ability to label trades with custom labels.
- Fixed bugs when adding telegram to profile and public boards