Switch to side-by-side view

--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -181,6 +181,7 @@
 utils/appformime.h \
 utils/base64.cpp \
 utils/base64.h \
+utils/cancelcheck.cpp \
 utils/cancelcheck.h \
 utils/chrono.h \
 utils/chrono.cpp \