Add keyboard navigation for account device list

Enter/Return/Menu: open device menu
Space: toggle check device
Escape: uncheck all
Alt+R/F5: refresh device list
Alt+S/Delete: sign out checked or all sessions

src/gui/Pages/AccountSettings/Sessions.qml

@@ -39,6 +39,8 @@ HColumnPage {
 
             loadFuture                   = null
             deviceList.sectionItemCounts = getSectionItemCounts()
+
+            if (! deviceList.currentItem) deviceList.currentIndex = 0
         })
     }
 
@@ -97,12 +99,14 @@ HColumnPage {
 
     footer: ButtonLayout {
         OtherButton {
+            id: refreshButton
             text: qsTr("Refresh")
             icon.name: "device-refresh-list"
             onClicked: page.loadDevices()
         }
 
         OtherButton {
+            id: signOutCheckedButton
             enabled: deviceList.model.count > 0
             text:
                 deviceList.selectedCount === 0 ?
@@ -118,6 +122,8 @@ HColumnPage {
         }
     }
 
+    Keys.forwardTo: [deviceList]
+
 
     HListView {
         id: deviceList
@@ -149,6 +155,22 @@ HColumnPage {
         Layout.fillWidth: true
         Layout.fillHeight: true
 
+        Keys.onEscapePressed: uncheckAll()
+        Keys.onSpacePressed: if (currentItem) toggleCheck(currentIndex)
+        Keys.onEnterPressed: if (currentItem) currentItem.openMenu(false)
+        Keys.onReturnPressed: Keys.onEnterPressed(event)
+        Keys.onMenuPressed: Keys.onEnterPressed(event)
+
+        HShortcut {
+            sequences: window.settings.keys.refreshDevices
+            onActivated: refreshButton.clicked()
+        }
+
+        HShortcut {
+            sequences: window.settings.keys.signOutCheckedOrAllDevices
+            onActivated: signOutCheckedButton.clicked()
+        }
+
         FlickShortcuts {
             flickable: deviceList
             active: