experimental implementation of disabling drawing outside the GOP array boundaries (currently disabled)

Fixed bug http://sourceforge.net/tracker/index.php?func=detail&aid=2457992&group_id=55736&atid=478070; hopefully also fixed incorrectly reported hit/selection boxes for nested structs (like the one reported in the previous bug report)

added automatic resize of arrays when adding/removing points via ctrl+click, fixed a bug where array is not properly redrawn after a new point is created

fixed bug where garray did not redraw its names when an array name has been changed via "rename" command

altered behavior of gop objects so that internal elements are not visibly selected. Also reworked the way array and scalar selection is dealt with fixing segfault and making a more fool-proof way of selecting them.

fixed memory leak for invisible 2 canvases with templates. they are now being freed when closing pd as they should be.