Publications route non-functional

[jpjenk]

This endpoint fails and loops back to the swagger sandbox for all parameters (pubid, datasetid and siteid).

The sandbox still tries to use 'apps' instead of 'data' in the url base path but if it is supposed to work anything like occurrences it should be formatted as:

http://api-dev.neotomadb.org/v2/data/publication

The endpoint should also take multiple parameter values as a comma separated list eg:
?datasetid=4716,6495,7063
It may be set up to do this already but that can't be tested because it is not operational.

This is one of the four critical underlying sub-querey paths for the ELC API

[SimonGoring]

Working through this, having a problem with swagger on the server, it's resolved locally and tests okay, but have switched endpoints to plural. @jpjenk