Bug fixes:

• Do not show balance if can't get the balance (#3695) @NicolasDorier
• Fix performance issue on dashboard for big wallets (#3694) @NicolasDorier
• Do not crash if /apps/{appId} do not exists @NicolasDorier

Improvements:

• Remove logs about pending invoices @NicolasDorier
• Add missing swagger doc for auto approval of payouts @Kukks