Switch to side-by-side view

--- a/packaging/debian/debianunitylens/control
+++ b/packaging/debian/debianunitylens/control
@@ -5,8 +5,9 @@
 Build-Depends: debhelper (>= 7), 
 	       autotools-dev,
                recoll,
+               python-recoll,
                python
-Standards-Version: 3.9.2
+Standards-Version: 3.9.3
 
 Package: recoll-lens
 Architecture: all