PICTURE_ERROR_SMALL = u'picture_error.png'
PICTURE_ERROR_MEDIUM = u'1297211435_error.png'
PICTURE_UNKNOWN_SMALL = u'1299549572_unknown2.png'
PICTURE_UNKNOWN_MEDIUM = u'1299549805_unknown.png'

PERMISSION_DOCUMENT_CREATE = 'document_create'
PERMISSION_DOCUMENT_PROPERTIES_EDIT = 'document_properties_edit'
PERMISSION_DOCUMENT_EDIT = 'document_edit'
PERMISSION_DOCUMENT_VIEW = 'document_view'
PERMISSION_DOCUMENT_DELETE = 'document_delete'
PERMISSION_DOCUMENT_DOWNLOAD = 'document_download'
PERMISSION_DOCUMENT_TRANSFORM = 'document_transform'
PERMISSION_DOCUMENT_TOOLS = 'document_tools'