Alias d to deploy
Add enviroment variables when starting.

Now if a file, $_MGR_CONF/project/env exists then we source it to get any
enviroment variables. I should consider using a stricter format where we read it
and then set variables so we can unset them when the project stops.
Quote env
Keep track of active projects when starting.

If a project has already been started then we should simple move into it, no
need to reclone.
Remove project name from list of active projects.