Added new resultspanel to handle displaying results post conversion. 

Added a check for inactive users and error message if inactive users
with owned records are found.  Tests for the behavior.  Disable the
conversion button if inactive user owned records are found. 

Fixes #751
Merge branch 'feature/47-hhaccount-conversion' of github.com:SalesforceFoundation/Cumulus into feature/47-hhaccount-conversion