WIP: Transition AgilentPs's to one class per model.

Changes the IPowerSupply implementation naming to one power supply model per class. The motivation is to make it easier to user to identify the required implementation and to reduce the ambiguity in naming.

Modifications are:

• Renamed Agilent PS's that had multiple models per class. The AgilentPs itself still supports multiple models.
• Updated Python bindings.
• Updated documentation.

WIP:

• Rename DT54xxPs and Bk16XXPs.

This was discussed at the labRemote meeting last Wednesday. My apologies if I misunderstood the conclusion.

changed the description

Another approach might be to allow aliases for class names to the registry. It won't get around the ambiguity naming problem (ie: E364xA that encompasses both single and dual channel power supplies), but it allows us to change the class name later on without affecting user configurations.

mentioned in merge request !208 (closed)

mentioned in merge request !268 (closed)