Upgrade bleach

Author: AddisonSchiller

requirements.txt

@@ -44,7 +44,7 @@ xlrd==1.0.0
 
 # Md
 markdown==2.6.2
-bleach==1.5.0
+bleach==2.0.0
 
 # Issue: certifi-2015.9.6.1 and 2015.9.6.2 fail verification (https://github.com/certifi/python-certifi/issues/26)
 certifi==2015.4.28