Layout refinement for app lists

Make all app lists (or at least all current app lists) use the same
base layout for icon, label, and sizing/padding.  This way they
should look the same.

Bug: 21727125
Bug: 21726922
Bug: 21853632
Change-Id: I3cffadb9e7b5184d4209deacd4ea70ec1d4f71b4

src/com/android/settings/AppPicker.java

@@ -164,7 +164,6 @@ public class AppPicker extends ListActivity {
                 holder.summary.setText("");
             }
             holder.disabled.setVisibility(View.GONE);
-            holder.checkBox.setVisibility(View.GONE);
             return convertView;
         }
     }