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[kilemensi]

Description

We've grown past the recommended single chunk size for our build. This PR introduce code splitting targeting the two largest libraries we're using: pdf-js and react-pdf.

Type of change

Please delete options that are not relevant.

• [x] Bug fix (non-breaking change which fixes an issue)
• [x] Breaking change (fix or feature that would cause existing functionality to not work as expected)

Screenshots

Problem

Build warning

Analysis

Solution

Build

Analysis

Checklist:

• [x] My code follows the style guidelines of this project
• [x] I have performed a self-review of my own code
• [x] I have commented my code, particularly in hard-to-understand areas
• [ ] I have made corresponding changes to the documentation

[kilemensi]

My only annoyance with the code is ... style={classes.header} why not just called it style={styles.header}.

I wrestled with @karimkawambwa (I even though of continuing to use pdfStyles) but in the end I chose to stick to the convention of calling them classes from within a component per Material UI.