Add SDK API docs back without search code

[crandmck]

The search feature generated by Doxygen contains third-party copyrighted code, which IBM won't allow in modules we publish. For this reason, we had to remove the API doc entirely; cf. strongloop/loopback#2072.

Investigate whether it's possible to generate SDK API docs without search capability, to avoid this. If so, republish the API docs to http://apidocs.strongloop.com.

[crandmck]

See https://www.star.bnl.gov/public/comp/sofi/doxygen/config.html#config_search. It looks like it's possible to remove the search feature, but need to confirm that this also removes the offending JS code.