Merge pull request #1280 from BuhtigithuB/pep8-gluon-html-py

Enhance gluon/html.py PEP8

gluon/html.py

@@ -308,7 +308,7 @@ def URL(a=None,
         else:
             function = f
 
-        # if the url gets a static resource, don't force extention
+        # if the url gets a static resource, don't force extension
         if controller == 'static':
             extension = None
             # add static version to url
@@ -955,7 +955,6 @@ class DIV(XmlComponent):
         # get the xml for the inner components
         co = join([xmlescape(component) for component in
                    self.components])
-
         return (fa, co)
 
     def xml(self):
@@ -2805,7 +2804,7 @@ class MARKMIN(XmlComponent):
         self.extra = extra or {}
         self.allowed = allowed or {}
         self.sep = sep
-        self.url = URL if url == True else url
+        self.url = URL if url is True else url
         self.environment = environment
         self.latex = latex
         self.autolinks = autolinks