ContentView tabs now switch based on sidebar

This required a change to the Provider URL format to simplify testing
of tabs with different content.

layouts/components/ContentView.qml

@@ -7,6 +7,9 @@ TabView {
     property var providers
     width: parent.width * 0.7
     height: parent.height
+
+    property var maxElements: providers.length
+
     tabsVisible: false
     Repeater {
         model: providers

layouts/ikinuki-default.qml

@@ -38,9 +38,16 @@ ApplicationWindow {
                     selectedView = 1;
                 }
                 sidebar.Keys.pressed(event);
+
+                if (event.key == Qt.Key_Down) {
+                    view.currentIndex = mod(view.currentIndex + 1, view.maxElements)
+                } else if (event.key == Qt.Key_Up) {
+                    view.currentIndex = mod(view.currentIndex - 1, view.maxElements)
+                }
+                console.log(view.currentIndex)
                 event.accepted = true;
             } else {
-
+                view.Keys.pressed(event);
             }
             event.accepted = true;
         }