Add alternative sliders

[FLomb]

For some users (e.g., other modellers, technical people and more), it might be helpful to have the option to unlock alternative sliders based on deployed capacity. For instance, see Figure S14 of the associated paper.

Such sliders should not be added to the same page on which we have the default ones to avoid too much information, but rather be an alternative way of filtering the options that users can unlock optionally, say by clicking a button.