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Update Travis

- Use HHVM 3.3.0 for benchmark
- Update MW versions
- Use PHPUnit 4.3*
Merge pull request #570 from SemanticMediaWiki/travis

Update Travis
Add HashBuilder
Merge pull request #571 from SemanticMediaWiki/hash-builder

Add HashBuilder
Travis / Adapt mediawiki GitHub download

https://github.com/wikimedia/mediawiki-core is now
https://github.com/wikimedia/mediawiki
Merge pull request #574 from SemanticMediaWiki/travis

Travis / Adapt mediawiki GitHub download
SubobjectParserFunction to use HashBuilder
QueryProfilerFactory to use Query::getHash
Merge pull request #572 from SemanticMediaWiki/id-clean-up

HashBuilder usage and QueryProfilerFactory clean-up
Tidy some tests and rem ParserTestCase

- Remove IContextSource from Factbox and use MessageBuilder instead
- Add Factbox::useInPreview and remove $this->context->getRequest()->getCheck( 'wpPreview' )
Merge pull request #575 from SemanticMediaWiki/tidy

Tidy some tests and rem ParserTestCase
Travis / Adapt mediawiki GitHub download link
Merge pull request #577 from s7eph4n/master

Travis / Adapt mediawiki GitHub download link
Tidy some tests

- Add fixture FoundedProperty
- Add testRdfXmlSerializationPrintoutForDatePropertyAnnotation
Merge pull request #578 from SemanticMediaWiki/tidy

Tidy some tests
SPARQLStore / Improve performance for subobjects update

Only need the delete for the master page (the subject), no need
the execute a delete on the subobject as it overriden during insertData

QueryResultLookupWithoutBaseStoreIntegrationTest::testQuerySubobjects_afterUpdatingWithEmptyContainerAllAssociatedEntitiesGetRemovedFromGraph
covers already that removal of outdated
Add resourceElementCache to Exporter for temporary storage of assignments

- Use of FixedInMemoryCache to limit cache size and avoid possibel memory leak