Update Python 2 documentation (2.7.9)

Fixes #203.

assets/javascripts/templates/pages/about_tmpl.coffee

@@ -292,7 +292,7 @@ credits = [
     'http://www.postgresql.org/about/licence/'
   ], [
     'Python',
-    '1990-2014 Python Software Foundation<br>Python is a trademark of the Python Software Foundation.',
+    '1990-2015 Python Software Foundation<br>Python is a trademark of the Python Software Foundation.',
     'PSFL',
     'http://docs.python.org/3/license.html'
   ], [

lib/docs/filters/python/clean_html.rb

@@ -51,7 +51,7 @@ module Docs
         end
 
         # Remove code highlighting
-        css('.highlight-python3').each do |node|
+        css('[class*="highlight-python"]').each do |node|
           pre = node.at_css('pre')
           pre.content = pre.content
           pre['class'] = 'python'

lib/docs/scrapers/python2.rb

@@ -2,7 +2,7 @@ module Docs
   class Python2 < FileScraper
     self.name = 'Python 2'
     self.slug = 'python2'
-    self.version = '2.7.8'
+    self.version = '2.7.9'
     self.type = 'sphinx'
     self.dir = '/Users/Thibaut/DevDocs/Docs/Python2' # downloaded from docs.python.org/2.7/download.html
     self.base_url = 'http://docs.python.org/2.7/'
@@ -22,7 +22,7 @@ module Docs
       library/sunau.html)
 
     options[:attribution] = <<-HTML
-      &copy; 1990&ndash;2014 Python Software Foundation<br>
+      &copy; 1990&ndash;2015 Python Software Foundation<br>
       Licensed under the PSF License.
     HTML
   end