Add settings button on PageStart

Disable some items when no Server has been set

client/ui/qml/Pages/PageGeneralSettings.qml

@@ -85,6 +85,7 @@ PageBase {
                 Layout.preferredHeight: 30
                 icon.source: "qrc:/images/svg/vpn_key_black_24dp.svg"
                 text: qsTr("Server Settings")
+                enabled: GeneralSettingsLogic.existsAnyServer
                 onClicked: {
                     GeneralSettingsLogic.onPushButtonGeneralSettingsServerSettingsClicked()
                 }
@@ -101,7 +102,8 @@ PageBase {
                 Layout.preferredHeight: 30
                 icon.source: "qrc:/images/svg/share_black_24dp.svg"
                 text: qsTr("Share connection")
-                enabled: GeneralSettingsLogic.pushButtonGeneralSettingsShareConnectionEnable
+                enabled: GeneralSettingsLogic.pushButtonGeneralSettingsShareConnectionEnable &&
+                         GeneralSettingsLogic.existsAnyServer
                 onClicked: {
                     GeneralSettingsLogic.onPushButtonGeneralSettingsShareConnectionClicked()
                 }

client/ui/qml/Pages/PageStart.qml

@@ -15,6 +15,23 @@ PageBase {
         visible: pageLoader.depth > 1
     }
 
+    ImageButtonType {
+        anchors {
+            right: parent.right
+            top: parent.top
+        }
+
+        width: 41
+        height: 41
+        imgMarginHover: 8
+        imgMargin: 9
+        icon.source: "qrc:/images/settings_grey.png"
+        visible: !GeneralSettingsLogic.existsAnyServer
+        onClicked: {
+            UiLogic.goToPage(PageEnum.GeneralSettings)
+        }
+    }
+
     Caption {
         id: caption
         text: start_switch_page.checked ?