PEP8 style fixes and other small style fixes

I used autopep8 on some files and did carefully check the changes.
I ignored E501,E302,E231,E225,E222,E221,E241,E203 in my search, and at
least E501 on any autopep8 run.

Other style fixes not related to PEP8:
* Only use new-style classes. I don't think the usage of old-style
  classes was voluntary. Old-style classes are removed in Python 3.
* Convert an if/else to a one-liner in mediawiki, change docstring style
  change to a comment something that wasn't really appropriate for a
  docstring.
* Unneeded first if condition in meteofrance

weboob/tools/log.py

@@ -35,11 +35,13 @@ COLORS = {
     'CRITICAL': COLOR_SEQ % ("\033[1;33m\033[1;41m"),
 }
 
+
 def getLogger(name, parent=None):
     if parent:
         name = parent.name + '.' + name
     return _getLogger(name)
 
+
 class ColoredFormatter(Formatter):
     """
     Class written by airmind:
@@ -52,9 +54,9 @@ class ColoredFormatter(Formatter):
             msg = COLORS[levelname] % msg
         return msg
 
+
 def createColoredFormatter(stream, format):
     if (sys.platform != 'win32') and stream.isatty():
         return ColoredFormatter(format)
     else:
         return Formatter(format)
-