EP760 Changes

[Apfuntimes]

Hi,

I have been trying to sort out some items with the EP760 and made the following changes:

• Updated the EP760 Device file -
  Taken from EP600, modified to:
  A. Hide Phases 2 and 3 as EP760 in AU is only single phase
  B. Updated DC Solar to incorporate 3rd Input - Note: Relies on additional change to field_attributes.py
  NOTE: I don't have AC Coupled solar via the ADL400 thus I don't know what address it should now be on.
• Updated field_attributes.py for the the 3rd DC Solar Input.

Unfortunately I haven't used github before so I was unsure how to upload the files.
EP760.zip

Also as I am not sure if the EP760 supports encryption I wasn't sure how to test it.

Cheers,
AP.