Use standards for differentiating bullet list indentation levels

I am asking you to revisit CONFSERVER-12263. 

It is standard that different levels of indentation of a bullet list (unordered list) have different symbols.

Confluence uses the same, solid bullet for all levels of list indentation. This makes no sense, and it removes an important visual cue.

Please have Confluence use standards by default, and in this case, that means allowing user agents to naturally vary the bullet style per different levels of list hierarchy.