Formatter fix up for nested lists

Here is a section for different cases involving nested lists. To the left there is the wiki markup for a list, with the actual (current) rendering to the right of it.

Below these there is also a block (right) depicting html and rendering of 1.1.6.5, and a block (left) depicting how I (ideally) would want html and rendering to be in 1.1.6.6 / 1.1.7.

Nested Lists

This section depicts how to markup nested (and therefore also simple) lists.

~1) This is an item
~1) This is another item
~~a) This is item in a sublist
~~a) This is another item, in the same sublist
~1) This is an item in the same list.

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Nested Lists with another type at the last line

~1) This is an item
~1) This is another item
~~a) This is item in a sublist
~~a) This is another item, in the same sublist
~- This is an item in a new list.

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Nested Lists with another type of list in the middle

~1) This is an item
~1) This is another item
~~a) This is item in a sublist
~~i) This is another item, in a new sublist
~1) This is an item in the first list.

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Lists starting at a deeper level

This section depicts lists starting at a deeper level. I personally don't like this, but I guess it could occur.

I don't want to incur the cost of checking the type of list that might come further down in the page, so i guess ordinary indent (a class of div) should be used.

~~1) This is an item
~~1) This is another item
~~~a) This is item in a sublist
~~~a) This is another item, in the same sublist
~~1) This is an item in the same list.