[TYPO3-mvc] extbase as new content element

[Zachary Davis, Cast Iron Coding LLC]

I'd like to second the request of previous posters in this thread; we 
ran into this same issue the other day. It'd be nice if the "list_type" 
value in registerPlugin defaulted to list_type but could be set to 
CType. This small change would make ExtBase a powerful tool for creating 
custom content elements (especially in conjunction with the recent 
possibilities for customization that have been added to the new content 
wizard).

Zach