Removing unused code

This code probably should never have been included. This is a "fix" for issue 602.
Merge pull request #603 from yaronkoren/patch-2

Removing unused code
Fix Travis for MW 1.25 Psr/Logger issue
Merge pull request #605 from SemanticMediaWiki/travis

Fix Travis for MW 1.25 Psr/Logger issue
Update README.md

[skip ci]
Make Travis to use a non broken MW
Merge pull request #608 from SemanticMediaWiki/travis

Make Travis to use a non broken MW
Add ConjunctionConditionBuilder
Add DisjunctionConditionBuilder
Add ConceptConditionBuilder
Add ThingConditionBuilder
Merge pull request #596 from SemanticMediaWiki/sparql-queryengine

SPARQLStore / Extend ConditionBuilderStrategyFinder
SPARQLStore / Use FixedInMemoryCache in RedirectLookup

Use the `FixedInMemoryCache` instead of an open array to avoid any
potential memory leak.
SPARQLStore check for non-redirectable resources in RedirectLookup

Reduce query requests to the RDF Store for only resources that can have
a redirect and avoid resource drain on elements such as 'rdf, 'rdfs' etc.
Merge pull request #600 from SemanticMediaWiki/sparql-redirectlookup

SPARQLStore RedirectLookup check for non-redirectable resources
Update RELEASE-NOTES.md

[skip ci]
Make pre-defined property page non-movable

Fixed properties are fixed for a reason therefore prevent
a property page for a pre-defined property to be movable.
Merge pull request #601 from SemanticMediaWiki/page-ismovable

Make pre-defined property page non-movable
Clean-up
Update SemanticMediaWikiProvidedHookInterfaceIntegrationTest.php