Small refactoring.

SD-246 : Integrate ElasticSearch for media files search

Small refactoring.
Small refactoring.

SD-246 : Integrate ElasticSearch for media files search

Small refactoring.
Small refactoring.

SD-246 : Integrate ElasticSearch for media files search

Small refactoring.
SD-247 : Implement proxy service for ElasticSearch support