Switch to side-by-side view

--- a/src/rcldb/rcldoc.cpp
+++ b/src/rcldb/rcldoc.cpp
@@ -22,4 +22,5 @@
     const string Doc::keyau("author");
     const string Doc::keytt("title");
     const string Doc::keykw("keywords");
+    const string Doc::keymd5("md5");
 }