SPARQL: hot fix for ASK with no variables (MARMOTTA-512)
update to Sesame 2.7.12
test case for a specific Sesame bug (SES-2090)
fix webservice response for empty SPARQL query (MARMOTTA-511)
MARMOTTA-513: preparing the build for the transition towards a jax-doclets release which solves the issue
Merge pull request #7 from apache/develop

Develop-7-10
Merge remote-tracking branch 'origin/develop' into MARMOTTA-444

abstract some common methods for LdpServiceSPARQLImpl and its tests