Updated composer dependencies
Implemented ability to influence the amont of returned documetns in a result set. Mainly to return all documents of a query result.
Made ElasticSearch test suite more robust in case the elasticsearch server is not available
Tested getAllDocumentsFix: added a verification that the limitation of the number of docs to be retrieved actually works. Notice: this commit depends on the LiipRegistryAdaptor in vendor dir to be switched to the corresponding branch
Merge pull request #26 from liip/getAllDocumentsFix

Get all documents fix