Toolbar and layer details layout updates

[yvonnesjy]

1. Change toolbar to overlay on top of map
2. Move layer details panel to the right of toolbar

[robyngit]

Change toolbar to overlay on top of map

Note this is already the behaviour on small screens, so we could just apply those styles for all screen sizes

[yvonnesjy]

Yup it's definitely doable technically. My main concern right now is how to handle it in the 3-part view. It already doesn't have enough space in the current layout, and it definitely doesn't have enough space to have the toolbar and the details panel side-by-side.

[robyngit]

Maybe on screensizes smaller than some threshold, the layer list could just take up 100% of the screen? Just an idea.