Issue752 - Low (Future) Priority; Code Refactor

[nbatwara]

• [ ] Check Econ graphics select/deselect logic and streamline. Try to make logic uniform across all graphics.
• [ ] Code modularity: Look at resultDisplay.js first - break down into separate logic files for Econ Tables and Graphics first. Then look into making Results graphics and Tables into separate files so logic is distributed properly for debugging.
• [ ] Similarly look into helpersFE.js and other files and break down logic based on components.
• [ ] Try to break code into reusable chunks based on OOP as much as possible.
• [ ] Lastly, look into including a testing framework - unit testing as well as front-end component testing so as to facilitate regression testing and achieve higher code coverage. This would help in not breaking previous code if new features are added to PEWI.