lib: add the `ps -g <pid>` query to Daemonize jobs
lib: add the `bjobs -l` query for LSF jobs
lib: add the `qstat -f1` query to PBS jobs
lib: get HTTP body in any case and fix display

Now the client always consumes the body stream replied by the server;
and hence displays more meaningful errors.
This fixes the issue #28.
lib: fix error messages for `check-process`
Merge PR #27
Merge PR #29