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

core/se/result_table.py

@@ -1,8 +1,8 @@
 # Created On: 2011-11-27
 # Copyright 2015 Hardcoded Software (http://www.hardcoded.net)
-# 
-# This software is licensed under the "GPLv3" License as described in the "LICENSE" file, 
-# which should be included with this package. The terms are also available at 
+#
+# This software is licensed under the "GPLv3" License as described in the "LICENSE" file,
+# which should be included with this package. The terms are also available at
 # http://www.gnu.org/licenses/gpl-3.0.html
 
 from hscommon.gui.column import Column
@@ -10,18 +10,19 @@ from hscommon.trans import trget
 
 from core.gui.result_table import ResultTable as ResultTableBase
 
-coltr = trget('columns')
+coltr = trget("columns")
+
 
 class ResultTable(ResultTableBase):
     COLUMNS = [
-        Column('marked', ''),
-        Column('name', coltr("Filename")),
-        Column('folder_path', coltr("Folder"), optional=True),
-        Column('size', coltr("Size (KB)"), optional=True),
-        Column('extension', coltr("Kind"), visible=False, optional=True),
-        Column('mtime', coltr("Modification"), visible=False, optional=True),
-        Column('percentage', coltr("Match %"), optional=True),
-        Column('words', coltr("Words Used"), visible=False, optional=True),
-        Column('dupe_count', coltr("Dupe Count"), visible=False, optional=True),
+        Column("marked", ""),
+        Column("name", coltr("Filename")),
+        Column("folder_path", coltr("Folder"), optional=True),
+        Column("size", coltr("Size (KB)"), optional=True),
+        Column("extension", coltr("Kind"), visible=False, optional=True),
+        Column("mtime", coltr("Modification"), visible=False, optional=True),
+        Column("percentage", coltr("Match %"), optional=True),
+        Column("words", coltr("Words Used"), visible=False, optional=True),
+        Column("dupe_count", coltr("Dupe Count"), visible=False, optional=True),
     ]
-    DELTA_COLUMNS = {'size', 'mtime'}
+    DELTA_COLUMNS = {"size", "mtime"}