Display process names consistently between status and start.  Fixes #300
Before:
  supervisor> status foo:*
  foo:foo_01                       STOPPED    Mar 05 11:44 AM
  supervisor> start foo:*
  foo_01: started

After:
  supervisor> status foo:*
  foo:foo_01                       STOPPED    Mar 05 11:44 AM
  supervisor> start foo:*
  foo:foo_01: started