Merged copy-prop into master.

-Loop through handle to get url in contentdm module
-Per Amy's email, copy prop publisher into dataProvider for MDL.
-Added shredding for contributor, creator, date, language,
 publisher, relation, title
-Created module copy_prop to copy from one prop into another.
-Added module copy_prop to akara.conf and server_support
-Added unit tests
-Updated profiles to use copy_prop for dataProvider field