style(appToolbar,dashToolbar,dashboardView/desktop): Prevent Widgets fro...

...m overlapping toolbars.

Make toolbars control height of the desktop view to prevent widgets from overlapping when the toolbars are visible. Minor adjustments to various other style components. Moving the chrome maximize, minimize, and disable to the left side of the widget.

Closes #214
Can you use one of the pre-defined OZP colors here instead?