Remove comments referencing pro_* templates.

These are remmnants from old CERN CDB and have been obsoleted for 5
years now.  And they don't add up to the documentation of the
component.

Fixes #75.
Merge pull request #76 from piojo/remove-oldstyle

Remove old-style template names from comments.
allow pxpy devices
Merge pull request #77 from stdweird/network_pxpy_devices

Allow pxpy devices