Switch to side-by-side view

--- a/src/doc/user/webhelp/Makefile
+++ b/src/doc/user/webhelp/Makefile
@@ -1,6 +1,6 @@
 # Configuration
 # The name of the source DocBook xml file
-INPUT_XML = ../usermanual.xml
+INPUT_XML = ../usermanual.xml ../recoll.conf.xml
 
 # The makefile assumes that you have a 
 # directory named images that contains