Add list-style-type: none

[Frenzie]

References koreader/koreader#2859

[Frenzie]

@poire-z These failures are going to get annoying. But that's kind of the point. :-P Any comments on this PR? It seems like it couldn't be any simpler (and it works, obviously), but a second opinion before merging never hurts.

[poire-z]

marker = L"\x0020"; is a space, with some width then ? No unwanted indentation with that ? Shouldn't it be just "" ?
(crengine is annoying enough by itself, it didn't need any help :)

[Frenzie]

No, it's good. Without that there's an unwanted lack of indentation.

With ""

With space

Browser (Firefox 58) for reference

(though it should come as no surprise that the list shows up with the same amount of space on the left)

[poire-z]

I was rather thinking about when a very long sentence is wrapped, before another list item came into play.
But I guess all such wrapped lines are aligned, and that the marker is outside the paragraph, just like with squares. So I guess it should be fine.

[Frenzie]

If there is a problem it exists with each and every list style. Just check a couple of lines above and below. ;-)

[poire-z]

(Just a quick note, so I can later link to this observation)

When list-style-position: inside, list-style-type: none should take no space, as shown by Firefox:

I'll fix that in a later PR, as it should also be done with my rendering hacks of behaving like inside when outside and text-align right or center.