bug fix for doc

bob/pad/base/evaluation/__init__.py

+from .PadIsoMetrics import PadIsoMetrics
+
+# to fix sphinx warnings of not able to find classes, when path is shortened
+PadIsoMetrics.__module__ = "bob.pad.base.evaluation"
+# gets sphinx autodoc done right - don't remove it
+__all__ = [_ for _ in dir() if not _.startswith('_')]
+