Fix submit_new_batch when verbose = True

The `submit_new_batch` method fails if `verbose` is set to `True`, as it
refers to the `parent_group` to get the total number of submissions.
When using the `BaseSubmissionController`, this attribute is not
specified.
To fix the `verbose` option for the `BaseSubmissionController` and
`FromGroupSubmissionController`, the number of submissions is
defined by the number of `all extras to `submit`.

aiida_submission_controller/base.py

@@ -183,7 +183,8 @@ def submit_new_batch(self, dry_run=False, sort=False, verbose=False, sleep=0):
         """Submit a new batch of calculations, ensuring less than self.max_concurrent active at the same time."""
         CMDLINE_LOGGER.level = logging.INFO if verbose else logging.WARNING
 
-        extras_to_run = list(set(self.get_all_extras_to_submit()).difference(self._check_submitted_extras()))
+        all_extras = set(self.get_all_extras_to_submit())
+        extras_to_run = list(all_extras.difference(self._check_submitted_extras()))
 
         if sort:
             extras_to_run = sorted(extras_to_run)
@@ -204,7 +205,7 @@ def submit_new_batch(self, dry_run=False, sort=False, verbose=False, sleep=0):
             table.add_column("Available", justify="left", style="cyan", no_wrap=True)
 
             table.add_row(
-                str(self.parent_group.count()),
+                str(len(all_extras)),
                 str(self.num_already_run),
                 str(self.num_to_run),
                 str(self.max_concurrent),