IconPicker widget improvements

[colemanw]

Overview

Fixes some style issues with the icon picker widget and adds some controls to the dialog.

Before

Icon inside form widget was misaligned:

Controls for rotating & clearing the icon were in the widget but not in the dialog:

After

Fixed alignment:

Controls are still part of the widget but are now also at the top of the dialog:

Comments

I added the controls to the dialog because there are several UIs that now use a more compact widget and there isn't room for the controls there. For example the icon picker in the ContactLayout editor is just an icon with a dashed box around it, so the only place to stick those controls is in the dialog.

[civibot]

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[colemanw]

@civicrm-builder retest this please

[eileenmcnaughton]

Just looking at this & it seems to be very narrowly scoped to me so I don't anticipate impacts outside the specific widget being altered so I don't think this should negatively impact on anyone.

Change is an improvement