Dolibarr/dolibarr — pull request #1809 by KreizIT (2014-08-06 15:42:03+00:00)
Title: Fix :  [ bug #1549 ] It's not possible add ExtraFields

Suggest also to revert change done by commit 31adeb7477969913b59ba92eb9ee58e0290791be.
Accessing static property is not possible this way.