Added support for embedded documents in mongo
Fixed util functions for mongo; added model copy
Fixed documentation generator crash
Added script to start ally-py distribution.
Improvements to content delivery manager

- new copylocal call
- some cleanup
Fixed copylocal in content delivery manager
Small fixes to content delivery manager
SD-247 - Implement proxy service for ElasticSearch support
Merge remote-tracking branch 'upstream/apy-8-implement-x-filter' into apy-8-implement-x-filter
Add support for testing.
Fixed invalid error code on input error

When the request does not contain a model and contains
only binary input the code in case of error is not 400
but 404.
SD-247 Implement Elasticsearch gateway
Merge pull request #137 from amagdas/apy-8-implement-x-filter

SD-247 Implement Elasticsearch gateway
Small refactoring.

SD-246 : Integrate ElasticSearch for media files search

Small refactoring.