Inplace volumetric matrix plot and table modules

[jorgenherje]

Inplace Volumetrics

• Plot module
• Table module
• Back-end aggregation/assembly of volumetrics data (grouped data)

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Closes: #688 Closes: #687 Closes: #590 Closes: #563

[rubenthoms]

I also took a quick look. Since Anders has taken a deep review, I think we can merge this in. :+1: