- switch to 72dp

- sharedWithMe default invisible

res/layout/grid_item.xml

@@ -43,8 +43,8 @@
 
         <ImageView
             android:id="@+id/thumbnail"
-            android:layout_width="64dp"
-            android:layout_height="64dp"
+            android:layout_width="72dp"
+            android:layout_height="72dp"
             android:layout_gravity="center_horizontal"
             android:layout_marginLeft="10dp"
             android:layout_marginRight="10dp"

res/layout/list_item.xml

@@ -130,7 +130,8 @@
         android:layout_marginLeft="4dp"
         android:layout_marginRight="4dp"
         android:layout_marginTop="4dp"
-        android:src="@drawable/shared_with_me" />
+        android:src="@drawable/shared_with_me"
+        android:visibility="invisible" />
 
     </LinearLayout>