Add SMW_CONCEPT_QUERY to enable concept in concepts (Bug 44467)

- https://bugzilla.wikimedia.org/show_bug.cgi?id=44467
- https://bugzilla.wikimedia.org/show_bug.cgi?id=15316

## Integration test
- Create `Concept:ContainsAllPopulationProperty` with `{{#concept: [[Population::+]] }}`
- Create `Concept:ContainsOnlySpecificAreaValue` with `{{#concept: [[Area::SomeDistinctValue]] }}`
- Create `Concept:CombinedConceptQuery` with  `{{#concept: [[Concept::ContainsAllPopulationProperty]][[Concept::ContainsOnlySpecificAreaValue]] }}`