#7 Toolbar dragging

[Anonymous]

1) rezising a toolbar using the UIC toolbar handles should draw
a preview on a glasspane.

2) moving a widget to another side of the screen should reset
the sizing set previously.

3) when toolbar grows, make its 'preferred size' grow with it
(in the UICToolBar.getPreferredsize, I think)

4) When sizing a toolbar horizontally (when docked left/right)
smaller, reset or the sizes of others in the same row.

[Thomas Zander]

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Points 2, 3 and 4 fixed.