Editor: Automatically create <ul> and <ol>

[roydejong]

When the user starts to type a new list, e.g.:

- Some item

It should automatically be converted into an unordered list. This conversion should happen on pressing the space key after the dash - character, if that dash is the first character one on that line.

The same should happen for numbered lists <ol>, e.g.:

1. 

In this case the number one followed by the dot . character should be first in line.