fixed ipython bug with python3 + highstock/highmaps

Author: ksolan

highcharts/highmaps/highmaps.py

@@ -369,7 +369,7 @@ def buildhtml(self):
         self.buildcontent()
         self.buildhtmlheader()
         self.content = self._htmlcontent.decode('utf-8') # need to ensure unicode
-        self._htmlcontent = self.template_page_highcharts.render(chart=self).encode('utf-8')
+        self._htmlcontent = self.template_page_highcharts.render(chart=self)
         return self._htmlcontent
 
     def buildhtmlheader(self):

highcharts/highstock/highstock.py

@@ -306,7 +306,7 @@ def buildhtml(self):
         self.buildcontent()
         self.buildhtmlheader()
         self.content = self._htmlcontent.decode('utf-8') # need to ensure unicode
-        self._htmlcontent = self.template_page_highcharts.render(chart=self).encode('utf-8')
+        self._htmlcontent = self.template_page_highcharts.render(chart=self)
         return self._htmlcontent