JS is unreadable... Needs better formatting and structure

[klovaaxel]

Problem

The index.js document has become too large and messy to easily read and maintain.

Proposed Solution

Definitely needs better structure/grouping of functions and more commenting on what the functions do,
As well as a new structure for calling functions so that the overview becomes clearer.

The index.js file should also probably be split up into smaller files that contain one section each.