cp editor updates

[Pablo d'Angelo]

Hi!

Phew. Finally I'm happy with the control point selection window.
I just commited some more fixes, that should address most concerns
that I heard before.

just try and tell me what you think about it.

The "Add" button is not connected yet, but the left mouse button
does the same thing, but faster.

There are also some artefacts from drawing the template and search
area's but thats just minor stuff that I'll fix sometime later.. my bed
is calling :)

ciao
  Pablo
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