bump sesame to 2.7.1
Patch change from ParserSetting to RioSetting that happened in 2.7.0

This API change from 2.7.0-beta2 was necessary to make settings work for
both ParserSettings and WriterSettings as necessary.
refresh internal settings after someone runs setParserConfig
Migrate beta settings to the 2.7.0 settings, including mapping
RDFaVersion to the semargl RDFa constants
make verification errors non-fatal, as sesame is more strict in 2.7.0 by
default

also parse to a Model instead of just to a StatementCollector
manage slf4j versions
add logging configuration files for tests to debug errors
Switch to using Rio.parse
Refactor method internals in SesameTestHelper

Some of the refactoring relies on methods added in 2.7.0 and 2.7.1
enable slf4j logging for tests
Add URI to output message for assertion errors
Customise debugging for failed tests in SesameTestHelper
add explicit dependency on xml-apis for jena
work on resolving the version conflict with jena-xalan-xmlapis by removing sesame-compliance-test and importing each of the required modules directly
get the build working again
Reduce logging
reduce clerezza test logging
Merge pull request #22 from ansell/sesame-27

Patches to migrate to Sesame-2.7.1