Issue Description:

Distributed query feature is (or seems to be) missing from the latest corese distribution. If corese has abandoned this feature, I would be grateful if you could suggest a decent engine for SPARQL federation in transparent manner: without SERVICE subqueries.

Bug Details:

There are no GUI controls presented in http://sparks.i3s.unice.fr/public:kgram_dqp_alban_gaignard and I am unable to find corresponding REST endpoints.

Steps to Reproduce:

1. Roll out corese from latest release.
2. Try to use distributed query process according to documentation.

Expected Behavior:

Distributed querying is available and usable as described in documentation.

Actual Behavior:

Distributed query is (or seems to be) missing.

Note to Developers:

None

Screenshots/Attachments:

None