Improve data loading, selection and build process

[dpwrussell]

• Ensure that drugs, dataset info and cell lines are loaded only once and selected from subsequently
• Used require.context to dynamically load TSV assets, but still be webpacked
• Build complete JSON files from TSV in place of using a Makefile for some and a subsequent load at runtime for others
• Added data script to compile the data into assets
• Removed plugin used to achieve something similar
• Removed some useless code that would attempt to load individual dataset info, which would call the load of all dataset info
• Fixed Cell Line ATCC Labels and data
• Removed unused Universal app configuration