extending and reducing specs on the fly (hopefully) working

Signed-off-by: nuss <st9fan@gmail.com>
not quite there yet \:
MIDI-/OSC-buttons resp. editors get created correctly but not yet functioning properly

Signed-off-by: nuss <st9fan@gmail.com>
on-the-fly changing of a CVWidgetMS' size working
A CVWidgetMS' size can now be changed by simply changing its spec. All related GUIs should reflect the changes.

Signed-off-by: nuss <st9fan@gmail.com>