Provide access to tokenisation options in visualisation tools

Right now, Word Cloud, Multicloud, and BubbleViz use the default word tokenisation settings. If you want to show clouds of bigrams, for instance, you have to go to Tokenize/Count regenerate the table, and then return to the visualisation tool.

Tools like Clustering allow the user to set tokenisation options on the same page, so we should probably add the same "Advanced Options" settings to the visualisation tool templates. I see the main problem with this to be one of screen real estate.

A slightly related issue is how the tokenisation settings are changed. At the moment, you can go to Clustering and set Lexos to tokenise using bi-grams. This is nearly instantaneous for reasonable-sized corpora, even with the clustering. You can then go to BubbleViz and view the bi-grams. But, if you do the same thing in Tokenizer, it takes a long time for the table to be generated. This may be an argument for adding an option to re-tokenise without reloading the table to the screen.

Review the Word Cloud, Multicloud, and BubbleViz visualisation tool templates alongside Clustering's existing Advanced Options settings. Determine how tokenisation options can fit into those pages and whether re-tokenisation should avoid reloading the table; the work is done when the visualisation tools expose the intended options and support the expected tokenisation behavior.