Reformat code

[steven-sheehy]

Detailed description:

• Uses Intellij's code reformat option to reformat all Java code per the settings in the .editorconfig.
• Since Intellij community version doesn't have Javascript support, used prettier to manually reformat code
• Integrated prettier as a git commit hook that runs automatically on commit and cleans up any changed files

Which issue(s) this PR fixes:
Fixes #338

Special notes for your reviewer:
Ignore whitespace when looking at diff

Checklist

• Documentation added
• Tests updated