Fixed broken build system in broken webpack version.
Also updates module system to standardise on ES6 import/exports,
Especially since babel has changed it's 'default' logic for the old
module system.
Changed to be rendered server side along with page content.
Changed deletion to fully delete comments from the database.
Added 'local_id' to comments for referencing.
Updated reply system to be non-nested (Incomplete)
Made database comment format entity-agnostic to be more future proof.
Updated designs of comment sections.
