Replace use of NamespaceUtils

needs https://gerrit.wikimedia.org/r/#/c/167781/
Merge pull request #104 from Wikidata-lib/namespaceutils

Replace use of NamespaceUtils
Specify 'license-name' => 'GPL-2.0+' for MediaWiki
Fix file permissions

Bug: https://bugzilla.wikimedia.org/show_bug.cgi?id=71928
Merge pull request #106 from Southparkfan/patch-1

Fix file permissions
Travis: Run composer install for MediaWiki
Also run tests on hhvm and hhvm-nightly
Merge pull request #107 from Wikidata-lib/hhvm

Also run tests on hhvm and hhvm-nightly
Merge branch 'master' of https://github.com/Wikidata-lib/property-suggester into considerClassifyingProperties
worked through review / fixed issues