[update] restart series

I.E.:
- The sockets are forced ranking by created time now.
- Print processing information:

  ```
  $ forever restartall
  info:    Stopping test/fixtures/cluster-fork-mode.js
  info:    Stopping test/fixtures/log-on-interval.js
  info:    Stopping test/fixtures/server.js
  info:    Forever stopped processes:
  data:        uid  command             script                             forever pid   id logfile                         uptime       
  data:    [0] b2lT /usr/local/bin/node test/fixtures/cluster-fork-mode.js 71227   71228    /Users/tjatse/.forever/b2lT.log STOPPED      
  data:    [1] 4L6o /usr/local/bin/node test/fixtures/log-on-interval.js   71268   71269    /Users/tjatse/.forever/4L6o.log 0:0:0:10.355 
  data:    [2] rypa /usr/local/bin/node test/fixtures/server.js            71272   71273    /Users/tjatse/.forever/rypa.log STOPPED 
  ```

- When `$ forever restartall` or `$ forever stopall` is being executed, we restart each worker one by one, but not all at once, it makes a bad experience especially workers have successively dependencies - *workers[1] dependents on workers[2], workers[3] deps on workers[2]...*
- Delay betweens each restart/stop operation can be customized now, `config interval`, this helps a lot when workers need warm-up.