Revert unwanted change of hello.odt, and prevent that from happening again.

loolwsd/.gitignore

@@ -29,6 +29,7 @@ m4
 systemplate
 test-driver
 jails
+test/data/hello-world.odt
 
 *.o
 *.exe

loolwsd/Makefile.am

@@ -105,8 +105,9 @@ clean-local:
 
 run: @JAILS_PATH@ @SYSTEMPLATE_PATH@/system_stamp
 	@echo "Launching loolwsd - launch this in your browser:"
+	@cp $(abs_top_srcdir)/test/data/hello.odt $(abs_top_srcdir)/test/data/hello-world.odt
 	@PROTOCOL="http" ; if test "z@ENABLE_SSL@" != "z"; then PROTOCOL="https" ; fi ; \
-		echo "   $$PROTOCOL://localhost:9980/loleaflet/dist/loleaflet.html?file_path=file://$(abs_top_srcdir)/test/data/hello.odt"
+		echo "   $$PROTOCOL://localhost:9980/loleaflet/dist/loleaflet.html?file_path=file://$(abs_top_srcdir)/test/data/hello-world.odt"
 	@echo
 	./loolwsd --systemplate="@SYSTEMPLATE_PATH@" --lotemplate="@LO_PATH@" \
                   --childroot="@JAILS_PATH@" --allowlocalstorage