Lazy load visualization components

[alancleary]

Currently the visualization components are bundled with the search module at build time, meaning when a gene view is loaded all of the visualization components are loaded. However, the micro-synteny component is the only one that's actually used when the gene view is first loaded. The other visualization components are only shown when the user explicitly says to show them. For this reason, these component should be individually bundled and loaded on-demand when a user requests them. This will increase the load speed of the gene view and prevent loading scripts for visualizations that the user never requests.