Switch to side-by-side view

--- a/requirements-common.txt
+++ b/requirements-common.txt
@@ -15,6 +15,7 @@
 # dep of Creoleparser
 Genshi==0.6
 # dep of oauth2
+html2text==3.200.3
 httplib2==0.7.4
 iso8601==0.1.4
 Jinja2==2.6