Format files with black

- Format all files with black
- Update tox.ini flake8 arguments to be compatible
- Add black to requirements-extra.txt
- Reduce ignored flake8 rules and fix a few violations

qt/se/details_dialog.py

@@ -11,7 +11,8 @@ from hscommon.trans import trget
 from ..details_dialog import DetailsDialog as DetailsDialogBase
 from ..details_table import DetailsTable
 
-tr = trget('ui')
+tr = trget("ui")
+
 
 class DetailsDialog(DetailsDialogBase):
     def _setupUi(self):
@@ -26,4 +27,3 @@ class DetailsDialog(DetailsDialogBase):
         self.tableView.setSelectionBehavior(QAbstractItemView.SelectRows)
         self.tableView.setShowGrid(False)
         self.verticalLayout.addWidget(self.tableView)
-