Add FusekiDatabaseSimpleQueryLookupIntegrationTest

- Runs simple live query lookups against a Fuseki SPARQL instance
- Adds `SparqlDBConnectionProvider`
- Adds `$smwgSparqlDatabaseConnector` setting which can contain `fuseki`, `4store`, `virtuoso`, `default`, and `custom`
- Make Travis vote the Fuseki-run 

### Fuseki-run
Passes Tests: 2051, Assertions: 6432, Skipped: 8

### Follow-up task
- [ ] SimplePageRedirectRegressionTest
- [ ] TimeDataTypeRegressionTest

Relates to #337
Right. Probably should be `storesToBeExcluded`.

Also in general, try using private rather than protected. You copied my bad habit :)