Fix various coding style errors

Signed-off-by: Michal Čihař <michal@cihar.com>

weblate/accounts/management/commands/importusers.py

@@ -23,7 +23,7 @@ from __future__ import unicode_literals
 import argparse
 import json
 
-from django.core.management.base import BaseCommand, CommandError
+from django.core.management.base import BaseCommand
 from django.contrib.auth.models import User
 
 
@@ -40,7 +40,7 @@ class Command(BaseCommand):
             'json-file',
             type=argparse.FileType('rb'),
             help='File to import',
-    )
+        )
 
     def handle(self, *args, **options):
         '''

weblate/trans/management/commands/__init__.py

@@ -106,7 +106,8 @@ class WeblateCommand(BaseCommand):
         elif len(options['component']) == 0:
             # no argumets to filter projects
             self.stderr.write(
-                'Please specify either --all or at least one <project/component>'
+                'Please specify either --all '
+                'or at least one <project/component>'
             )
             raise CommandError('Nothing to process!')
         else:

weblate/trans/management/commands/benchmark.py

@@ -21,7 +21,7 @@
 import cProfile
 import pstats
 
-from django.core.management.base import BaseCommand, CommandError
+from django.core.management.base import BaseCommand
 
 from weblate.trans.models import SubProject, Project
 
@@ -53,7 +53,7 @@ class Command(BaseCommand):
         )
         parser.add_argument(
             'repo',
-            help='VCS repository URL',
+            help='Test VCS repository URL',
         )
         parser.add_argument(
             'mask',