Added tab navigation functional. (#721)

- Added tab navigation functional.
- In basic types added parentFlickable property, which will help to ensure, that the item is visible within flickable parent during tab navigation.
- Added focus state for some basic types.
- In PageType qml file added lastItemTabClicked function, which will help to focus tab bar buttons when the last tab on the current page clicked.
- Added Focus for back button for all pages and drawers.
- Added scroll on tab for Servers ListView on PageHome.

client/ui/qml/Components/SettingsContainersListView.qml

@@ -22,16 +22,52 @@ ListView {
     clip: true
     interactive: false
 
+    activeFocusOnTab: true
+    Keys.onTabPressed: {
+        if (currentIndex < this.count - 1) {
+            this.incrementCurrentIndex()
+        } else {
+            currentIndex = 0
+            lastItemTabClickedSignal()
+        }
+    }
+
+    onCurrentIndexChanged: {
+        if (visible) {
+            if (fl.contentHeight > fl.height) {
+                var item = this.currentItem
+                if (item.y < fl.height) {
+                    fl.contentY = item.y
+                } else if (item.y + item.height > fl.contentY + fl.height) {
+                    fl.contentY = item.y + item.height - fl.height
+                }
+            }
+        }
+    }
+
+    onVisibleChanged: {
+        if (visible) {
+            this.currentIndex = 0
+        }
+    }
+
     delegate: Item {
         implicitWidth: root.width
         implicitHeight: delegateContent.implicitHeight
 
+        onActiveFocusChanged: {
+            if (activeFocus) {
+                containerRadioButton.rightButton.forceActiveFocus()
+            }
+        }
+
         ColumnLayout {
             id: delegateContent
 
             anchors.fill: parent
 
             LabelWithButtonType {
+                id: containerRadioButton
                 implicitWidth: parent.width
 
                 text: name