add Greek date handler, by Zissis Papadopoulos, for further testing

git-svn-id: svn+ssh://svn.code.sf.net/p/gramps/code/branches/maintenance/gramps34@22795 4ae1f11a-8b86-4847-b8af-ab372f36d1fd
added SVN properties to _Date_el.py

git-svn-id: svn+ssh://svn.code.sf.net/p/gramps/code/branches/maintenance/gramps34@22796 4ae1f11a-8b86-4847-b8af-ab372f36d1fd
add clarifying comment to _Date_el.py

git-svn-id: svn+ssh://svn.code.sf.net/p/gramps/code/branches/maintenance/gramps34@22797 4ae1f11a-8b86-4847-b8af-ab372f36d1fd
remove superfluous untranslsted strings from _Date_ar.py

git-svn-id: svn+ssh://svn.code.sf.net/p/gramps/code/branches/maintenance/gramps34@22798 4ae1f11a-8b86-4847-b8af-ab372f36d1fd