Manipulating lists creates markup with inline styles

[litera]

Reproduce bug:

1. Open demo in Google Chrome
2. Write few lines of text
3. Select some of these lines and convert to UL/OL
4. Click the same button again

You will end up with completely different markup including SPAN inline styles which is especially undesired.

Before executing step 3:

After step 4:

[yields]

yeah, there's this issue: #5.
ATM i don't have time for this huge fix / debugging, i'll take a look over the weekend though.