Small fixes for our Savegame (Newfile_)gump.

the lower scroll buttons needed to be placed a tiny bit higher
and all the scroll buttons needed a darker side shadow when pressed to look the same as our other buttons.

Author: DominusExult

data/sav_down.shp

@@ -64,7 +64,7 @@ using std::tm;
  *  Statics:
  */
 // Button Coords
-const short Newfile_gump::btn_rows[5] = {186, 2, 15, 158, 171};
+const short Newfile_gump::btn_rows[5] = {186, 2, 15, 156, 169};
 const short Newfile_gump::btn_cols[5] = {2, 46, 88, 150, 209};
 
 // Text field info