Add default flag and dataobjects.
Only add default interests when subscribing.
Fix typo in classname
require the DeliveranceMailingListInterestWrapper as this page uses it.
Update SQL statement and variable name.
Move the default interest code to the list.
Remove some unused code.
Pass the list instead of the array.
Get the interests from the info.
Renaming old getInterests() to getInterestGroupings().

This method was barely used, and gets an array of the full interest groupings from MailChimp.
Merge pull request #2 from isaacgrant/charleswaddell-add-default-interests

Renaming old getInterests() to getInterestGroupings().
Parent method is abstract.
Merge pull request #6 from charleswaddell/add-default-interests

Add default mailing list interests