Proxy defers to object for uuid_only?

This change is in response to changes in Rails 4
which result in additional responds_to? calls
on the proxy object which are not correctly handled
for belongs_to associations established with a uuid.
The api attempts to lookup the object with a non-
existent read action url.

It may prove more robust in the long term to adjust
the attempt to load the object. But this is likely
to have wider impact elsewhere.
Update rails logger to account for api changes
Add plate_template model to sequencescape
Update lot and qc models to include relevant info
Add remaining TagQC models to client-API
Remove old puts from code