New Widgets & UI Adjustments

New widgets (16 items):
Numerical:
• Efficiency of the current balance (Spot + Futures)
• Efficiency of the balance history (Spot + Futures)
Charts:
• Efficiency of the current balance by API key (Spot + Futures)
• Efficiency of the balance history (Spot + Futures)
• Efficiency of the balance history by key (Spot + Futures)
• Funding (Futures)
• Funding by key (Futures)
• Funding by symbol (Futures)
• Liquidation (Futures)
• Liquidation by key (Futures)
• Liquidation by symbol (Futures)
New functionality:
• When adding keys via files, there is now an option to create a group for the keys
• When adding keys one by one, a UID is now assigned, and key validation is performed
• Analytics added for importing keys via file
Fixes:
• Fixed translations for widget descriptions and settings
• Fixed numerical widgets for balance history for futures and spot (were incorrectly displayed in lists and had incorrect values with a large number of keys)
• Fixed graphical widgets for spot and futures (fixed freezing issues)
• Fixed currency prefix display for numerical widgets