Style widgets

[merryman]

This branch will provide a complete set of graphical widgets for direct manipulation of frequently used types of values in Morphic (.i.e. Color, Gradient, Number, Enumerable, Rectangle, Point...) The widgets will be universally embeddable, meaning they are not restricted to be used in certain contexts (such as the inspector), but can (and should) be embedded in various tools or interactive essays. The goal of style widgets is, to make classic morph properties easily recognizable and changeable in a straight forward manner. This provides a useful building block for interactive essays or other dynamic representations of applications in lively.

[rksm]

Heads up: 2f7b2f5597925a6e15dad3a06ca5d61f2646c015 replaces the icon picker with an inline version as the old one took more than 3secs to load on startup.

[rksm]

Looks good, some issues I found:

• tooltips look weird:

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• When clicking/dragging in the positioning widget, frame gets moved

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• Style widget unusable

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• Layout widget sets layout but doesn't update layouter name

[rksm]

There seem to be a number of new entities ("popovers", controls, etc.) Can you please make a list and provide a short description of what entities are there and what they do.

[rksm]

After collapse/uncollapse filters aren't applied

[rksm]

The inspector does not seem to be updating the properties shown anymore?

[rksm]

How does one get rid of the color tool in the style sheet editor?