Add plotting option toggles to sidebar

[chrisamiller]

For many plots, it'd be handy to be able to switch between plotting styles with some toggles/radio buttons in the sidebar. Some ideas for a first pass

• "raw values" and "log2 scaled"
• median line
• boxplot, dotplot, boxplot with dots, violin plot

[chrisamiller]

boxplot example: http://www.sthda.com/sthda/RDoc/figure/ggplot2/ggplot2-box-plot-dot-plot-data-visualization-1.png violin example: http://www.sthda.com/sthda/RDoc/figure/ggplot2/ggplot2-violin-plot-dot-plot-data-visualization-1.png

[chrisamiller]

https://github.com/leylabdotorg/amlviz/pull/46