Initialize function, allow passing in alternative progname

touch/Main.qml

@@ -27,6 +27,8 @@ Item {
     GPodderCore { id: py }
     GPodderPlayback { id: player }
 
+    GPodderPodcastListModel { id: podcastListModel }
+
     property real scalef: width / 480
 
     anchors.fill: parent

touch/PodcastsPage.qml

@@ -27,8 +27,6 @@ SlidePage {
     id: podcastsPage
     hasPull: true
 
-    Component.onCompleted: podcastListModel.reload();
-
     PullMenu {
         PullMenuItem {
             source: 'images/play.png'
@@ -62,7 +60,7 @@ SlidePage {
         section.property: 'section'
         section.delegate: SectionHeader { text: section }
 
-        model: GPodderPodcastListModel { id: podcastListModel }
+        model: podcastListModel
 
         delegate: PodcastItem {
             onClicked: pgst.loadPage('EpisodesPage.qml', {'podcast_id': id, 'title': title});