Fix loading screens for manage and running apps

Also add loading screen to manage permissions as this can take a
long time to load in some circumstances. Build loading screens into
Utils and SettingsPreferenceFragment so that it can be easily used
other places in the future.

Change-Id: I7febd06695487e02ced793a9fd418051b5f0eab8

src/com/android/settings/applications/ManagePermissions.java

@@ -36,7 +36,6 @@ public class ManagePermissions extends SettingsPreferenceFragment
 
     private static final String TAG = "ManagePermissions";
 
-    private boolean mLoadComplete;
     private PermissionsInfo mPermissionsInfo;
 
     @Override
@@ -46,6 +45,13 @@ public class ManagePermissions extends SettingsPreferenceFragment
         mPermissionsInfo = new PermissionsInfo(getActivity(), this);
     }
 
+    @Override
+    public void onActivityCreated(Bundle savedInstanceState) {
+        super.onActivityCreated(savedInstanceState);
+
+        showLoadingWhenEmpty();
+    }
+
     private void refreshUi() {
         PreferenceScreen screen = getPreferenceScreen();
         if (screen == null) {