Some cleanup, exposing the process javascript functions. Fix some missing icons. Add setting for the advanced info

[jukebox42]

Just some cleanup from the last release. There's a few missing icons because of how old octoprint's fa lib is.

New Features:

• Added setting to disable advanced data display (on by default).

Bug Fixes:

• Fixed missing cut icon, arrow icon, eject icon.

Internals:

• Exposed the process functions so they can be used if needed by other plugins.