Enable lock screen widget

Closes #97

astrid/src/main/AndroidManifest.xml

@@ -205,9 +205,10 @@
                 <action android:name="com.todoroo.astrid.widget.TasksWidget.EDIT_TASK"/>
                 <action android:name="org.tasks.TASK_LIST_UPDATED"/>
             </intent-filter>
+
             <meta-data
                 android:name="android.appwidget.provider"
-                android:resource="@xml/widget_provider_info" />
+                android:resource="@xml/scrollable_widget_provider_info" />
         </receiver>
 
         <receiver android:name="com.todoroo.astrid.service.GlobalEventReceiver">

astrid/src/main/res/xml/scrollable_widget_provider_info.xml

@@ -7,10 +7,12 @@
 
 <appwidget-provider xmlns:android="http://schemas.android.com/apk/res/android"
     android:configure="com.todoroo.astrid.widget.WidgetConfigActivity"
+    android:widgetCategory="keyguard|home_screen"
     android:minWidth="142dip"
     android:minHeight="142dip"
     android:minResizeWidth="142dip"
     android:minResizeHeight="142dip"
     android:updatePeriodMillis="86400000"
     android:initialLayout="@layout/scrollable_widget_light"
+    android:initialKeyguardLayout="@layout/scrollable_widget_light"
     android:resizeMode="horizontal|vertical"/>