manager: new default options for job display
manager: new default options for job display

- The option --shownames now behaves as the previous default (that is,
  show each job name, which could be disabled with -t or -q)
- The option -t now is default. It implies -f, unless -a, -s, or -q is
  also supplied.

Example (old --> new command line)

queueexp       --> queueexp --shownames
queueexp -f    --> queueexp --shownames -f
queueexp -t    --> queueexp -tq
queueexp -tf   --> queueexp
queueexp -ts   --> queueexp -s

rfgiusti/runexp,rfgiusti/runexp,rfgiusti/runexp,rfgiusti/runexp