Deprecation warnings appear in web applications log files making them difficult to traverse by developers.
Please note that demo-related repositories are not under the scope of this Story (with one exception).

Repositories under the scope:

• ezpublish-kernel
• ezplatform
• repository-forms
• PlatformUIBundle
• ez-support-tools
• ezplatform-solr-search-engine
• RecommendationBundle (demo-related, but needed to be fixed as well to move forward with preparations for Symfony 3.0)