GH #270 - Working on ElasticSearch client.
GH #270 - Added GetList for ES connections.
GH #270 - Create/Edit actions.
GH #270 - Correctly display edited values.
GH #270 - Added metaclasses-based API services.
GH #270 - No need for a logger here.
Merge branch 'dsuch-f-gh270-elastic-search-client'