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

modules/youtube/pages.py

@@ -47,6 +47,7 @@ class LoginPage(BasePage):
         self.browser['Passwd'] = password
         self.browser.submit()
 
+
 class LoginRedirectPage(BasePage):
     pass
 
@@ -64,6 +65,7 @@ class BaseYoutubePage(BasePage):
         else:
             return True
 
+
 class ForbiddenVideoPage(BaseYoutubePage):
     def on_loaded(self):
         element = self.parser.select(self.document.getroot(), '.yt-alert-content', 1)
@@ -78,11 +80,13 @@ class VerifyAgePage(BaseYoutubePage):
         self.browser.select_form(predicate=lambda form: form.attrs.get('id', '') == 'confirm-age-form')
         self.browser.submit()
 
+
 class VerifyControversyPage(BaseYoutubePage):
     def on_loaded(self):
         self.browser.select_form(predicate=lambda form: 'verify_controversy' in form.attrs.get('action', ''))
         self.browser.submit()
 
+
 class VideoPage(BaseYoutubePage):
     AVAILABLE_FORMATS = [38, 37, 45, 22, 43, 35, 34, 18, 6, 5, 17, 13]
     FORMAT_EXTENSIONS = {
@@ -91,7 +95,7 @@ class VideoPage(BaseYoutubePage):
         18: 'mp4',
         22: 'mp4',
         37: 'mp4',
-        38: 'video', # You actually don't know if this will be MOV, AVI or whatever
+        38: 'video',  # You actually don't know if this will be MOV, AVI or whatever
         43: 'webm',
         45: 'webm',
     }