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
I find this a little terrifying, though I haven't actually found any problems related to it yet. Is there any way to move the absolute positioning to a smaller scope, or does it need to be at the top level?