String representation of a Folder is its name
String representation of a Folder is its name

This enables us to just use the folder instance in the ui output and get
a name rather than having to call getname() all the time.

Signed-off-by: Sebastian Spaeth <98dcb2717ddae152d5b359c6ea97e4fe34a29d4c@SSpaeth.de>
Signed-off-by: Nicolas Sebrecht <347709267ddd1958560c4c317ea3fd613f10a719@laposte.net>

frioux/offlineimap,frioux/offlineimap