[mnemo] Cannot create new notes

[Chuck Hagenbuch]

Quoting Keyser Soze <keyser_soze at usa.com>:

> Using the HEAD version from CVS:
> I can list notes but I do not have any and have no option to create new
> ones.  Generated this error in the horde.log file when I selected mnemo:
> HORDE [error] [mnemo] not supported [on line 102 of 
> "/horde/horde/mnemo/lib/Mnemo.php"]

Use a SQL DataTree driver instead of null.

-chuck

--
"Regard my poor demoralized mule!" - Juan Valdez