update and enable Arabic translation (by Muhammad Bashir Al-Noimi)

git-svn-id: svn+ssh://svn.code.sf.net/p/gramps/code/branches/maintenance/gramps34@22599 4ae1f11a-8b86-4847-b8af-ab372f36d1fd
Add Arabic on lang_map

git-svn-id: svn+ssh://svn.code.sf.net/p/gramps/code/branches/maintenance/gramps34@22600 4ae1f11a-8b86-4847-b8af-ab372f36d1fd
Add Arabic date handler to SVN, not enable yet on __init__.py and Makefile.am files

git-svn-id: svn+ssh://svn.code.sf.net/p/gramps/code/branches/maintenance/gramps34@22601 4ae1f11a-8b86-4847-b8af-ab372f36d1fd