Add the environment name to deploy modal header

When clicking the Quick Deploy or Add to Env button, 
the context of the environment name gets lost when 
the modal is presented to the user. Add the environment 
name to the deploy modal header.

Change-Id: Ib2c0217e0099450cc5dcb3052ec8d72ff0bbe39f
Implements: blueprint add-env-name-to-deploy-modal-header
Merge "Add the environment name to deploy modal header"