Enable lazy loading by default.

Also fixes undefined error when not logged in.

qml/Room.qml

@@ -6,15 +6,13 @@ import Matrique 0.1
 import "qrc:/qml/form"
 
 Page {
-    property var connection
+    property alias connection: roomListModel.connection
 
     id: page
 
     RoomListModel {
         id: roomListModel
 
-        connection: page.connection
-
         onRoomAdded: setting.lazyLoad ? {} : room.getPreviousContent(20)
         onNewMessage: window.active ? {} : matriqueController.showMessage(roomName, content, icon)
     }

qml/form/RoomListForm.qml

@@ -240,6 +240,4 @@ Item {
             }
         }
     }
-
-    onCurrentRoomChanged: setting.lazyLoad && currentRoom && !currentRoom.timelineSize ? currentRoom.getPreviousContent(20) : {}
 }

qml/form/SettingGeneralForm.qml

@@ -10,6 +10,7 @@ Page {
         Switch {
             id: lazyLoadSwitch
             text: "Lazy load at initial sync"
+            checked: true
         }
         Switch {
             id: asyncMessageDelegateSwitch

qml/main.qml

@@ -73,7 +73,7 @@ ApplicationWindow {
 
         parent: null
 
-        connection: matriqueController.isLogin ? window.connection : undefined
+        connection: matriqueController.isLogin ? window.connection : null
     }
 
     Setting {