Action 1:
https://docs.kde.org/trunk5/en/extragear-office/skrooge/import.html

Backend: Skrooge can also import operations by using a backend. The only one supported is WEBOOB. By using this backend you can import all operations from all your banks in only one click. For that, you just have to install WEBOOB and activate the corresponding backend from settings.

More than one backend now

Action 2:
https://docs.kde.org/trunk5/en/extragear-office/skrooge/import.html

Add other specificities

Action 3:
Describe options

Action 4:
https://docs.kde.org/trunk5/en/extragear-office/skrooge/dashboard.html#dashboard_alarms
Add missing widget