Add new dc-general vendor namespace.
Add name of the MCW to the event propagation cycle.

Propagation now is:
1. dc-name mcw-name mcw-field-name
2. dc-name mcw-name
3. dc-name
Merge pull request #1 from discordier/hotfix/dc-general

Add name of the MCW to the event propagation cycle.
Check if the DC implements EnvironmentAwareInterface.
Merge pull request #148 from tristanlins/hotfix/dc-general

Add new dc-general vendor namespace.