Fix: set embargo date to null for "free" embargo choice. Pending: also
correct HEAL OAI Crosswalk to always expose a 'heal.date.available'
value.
CLOSED - task 9: Add missing HEAL meta default values to crosswalk 
http://github.com/el95149/HEAL-DSpace/issues/issue/9
CLOSES #11
minor changes in cfg
Merged Heal changed