Fixed setting list styles: Correctly remove the list-style classes and set
the selected style also for nested lists, if they are contained in the
selection.
Fix handling of definition lists nested into numbered or bulleted lists.
When "undoing" the definition list, the dt and dd elements will be
transformed to li elements now.
Merge pull request #1271 from alohaeditor/hotfix-0.25.x-rt58552

Fixed setting list styles: Correctly remove the list-style classes and s...