Device manager - contextual menus (#9832)

* add session count to current session contextual signout

* add contextual menu to other sessions section

* typo

* i18n

* strict

test/components/views/settings/devices/CurrentDeviceSection-test.tsx

@@ -42,6 +42,7 @@ describe("<CurrentDeviceSection />", () => {
         saveDeviceName: jest.fn(),
         isLoading: false,
         isSigningOut: false,
+        otherSessionsCount: 1,
     };
 
     const getComponent = (props = {}): React.ReactElement => <CurrentDeviceSection {...defaultProps} {...props} />;