feat: updates to the minimal mode version

[crfmc]

• (Sehi) Implement tooltips for each track
• Implement popovers with instructions for interaction/interpretation
• Upload images to show in the documentation
• Relocate the chromosome search bar to the center
• (Non-minimal-mode) add navigation buttons and modals/popover

[sehilyi]

A very minor thing – I see now there is a long padding (longer than the padding in the non-minamal-mode Chromoscope) at the bottom (i.e., between the bottom edge of the browser and the alignment views). I think this makes it look like it is a bit off.

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Also, another tiny thing – there is now a grey rectangle overlayed underneath the "jump to the top" button which might be due to the conflict with Bootstrap.