Various stylistic fixes

- Fix PEP8's line too long warning
- Remove useless parentheses
- Use triple quotes for docstring
- Address pylint's 'inconsistent-return-statements'
- Specify string format arguments as logging function parameters
- Comment out already disabled block of code
- Remove useless else (after return)
- Remove useless statement
- Do not import already imported module

whipper/command/main.py

@@ -74,11 +74,11 @@ def main():
 
 
 class Whipper(BaseCommand):
-    description = """whipper is a CD ripping utility focusing on accuracy over speed.
-
-whipper gives you a tree of subcommands to work with.
-You can get help on subcommands by using the -h option to the subcommand.
-"""
+    description = (
+        "whipper is a CD ripping utility focusing on accuracy over speed.\n\n"
+        "whipper gives you a tree of subcommands to work with.\n"
+        "You can get help on subcommands by using the -h option "
+        "to the subcommand.\n")
     no_add_help = True
     subcommands = {
         'accurip': accurip.AccuRip,