SPARQLStore / rename some classes to fit NS usage

- Add refreshConceptCache / deleteConceptCache / getConceptCacheStatus
- Enable RebuildConceptCacheMaintenanceRegressionTest
- Add getPropertyTables
- Enable RebuildPropertyStatisticsMaintenanceRegressionTest
- Enable SimplePageRedirectRegressionTest
Merge pull request #415 from SemanticMediaWiki/sparql-ren

SPARQLStore / rename some classes to fit NS usage