Visualisation with assign query + lineage fit

[johnlees]

Needs the dense matrix to draw the tree. Decide whether to: a) Recalculate each time b) Save the dense matrix along with the sparse matrix

[johnlees]

Or, I think the best choice: c) When a visualisation is made create the full matrix and save it. Subsequent visualisations can then load this file rather than recalculating

[johnlees]

Or d) Do b) by default, but add an option to turn off if desired