[TASK] Drop rpFlatSelect directive
[FIX] rpCombobox: Prevent wordwrap in suggestions
[FEATURE] rpCombobox: Add rp-combobox-small attr

For rendering small combo boxes like on the balance overview.
[FIX] Blur rpCombobox after picking a suggestion
[TASK] Net worth widget: Use small rpCombobox

Instead of rpFlatSelect.
[FIX] Net worth widget: Correct aggregate currency