Technical debt issues

[niharikasingh]

This is a list of issues that is not blocking release of v1, but would be nice to do someday to make the codebase cleaner.

• Use constants for "materials", "tools"
• Use constants for "binary", "gradient"
• In dashboard.js, the useEffect and handleChange functions have some code duplication that could be refactored
• As currently written, I believe sub-sub-inputs will be broken. We don't need this functionality yet though.
• Move styles from jsx to scss files (as much as possible)
• Import svgs from an svg file instead of putting the entire svg in the shared.js file
• The graph node has duplication in how it constructs the input nodes. Refactor.
• The documentation node has duplication in how it constructs the sidebar. Refactor.
• Should mk_provider_to_meta use the get_country function?
• Remove flags from orgProvision and use flags from the countryFlags dict in the frontend
• Python strings to constants
• Add tests for countryFlags function in preprocessing script
• Add ESlint to precommit
• Refactor getBackgroundGradient function to also return unhighlighted
• Documentation node gets params node and currSelectedNode which seem duplicative
• Refactor InputDetail so that the variant and non-variant country and org tables are constructed similarly