moved sidebar to own file

Sidebar.qml

@@ -0,0 +1,34 @@
+import QtQuick 2.0
+import TTRSS 1.0
+import QtQuick.Controls 1.3
+import QtQuick.Layouts 1.1
+
+ScrollView {
+    id: item
+
+    property Server server
+    property Content content
+
+    Layout.minimumWidth: 400
+
+    ListView {
+
+        focus: true
+        anchors.fill: parent
+        spacing: 1
+        model: item.server.posts
+
+        delegate: Component {
+            PostListItem {}
+        }
+
+        highlight: Rectangle {
+            color: "lightblue"
+            opacity: 0.5
+        }
+
+        onCurrentItemChanged: {
+            item.content.post = server.posts[currentIndex]
+        }
+    }
+}