list export: migrating the phone_list.
list export: migrating email_list.
list export: migrating member_development list.
list export: some clean-up.
list export: switching groups#show for CSV and XLS to the new ListExport mechanism.
list export: including the xls tables in the download menu of groups#show.
list export: include excel mimetype icon.

this icon has been adapted from this resource, where it was decleared as free.
http://icons.iconarchive.com/icons/carlosjj/microsoft-office-2013/128/Excel-icon.png

http://www.iconarchive.com/show/microsoft-office-2013-icons-by-carlosjj/Excel-icon.html

LICENSE

License: Free for non-commercial use.
Commercial usage: Not allowed
The products or characters depicted in these icons are © by Microsoft