Fix favicon and exit dangling test-sheet-1 session (#311)

app/test/Makefile

@@ -602,7 +602,7 @@ test-sheet-1: ${BUILD_DIR}/bin/zsv_sheet${EXE}
 	tmux send-keys -t $@ "${PREFIX} $< worldcitiespop_mil.csv" ENTER && \
 	sleep 0.5 && \
 	tmux -v capture-pane -t $@ -p ${REDIRECT1} ${TMP_DIR}/[email protected] && \
-	tmux -v send-keys -t $@ "q" && \
+	tmux -v send-keys -t $@ "q" "exit" && \
 	${CMP} ${TMP_DIR}/[email protected] expected/[email protected] && ${TEST_PASS} || (for x in `ls tmux-*.log` ; do echo "Log $$x:" && cat $$x ; done && ${TEST_FAIL}))
 
 test-sheet-2: ${BUILD_DIR}/bin/zsv_sheet${EXE}

playground/index.html

@@ -6,6 +6,8 @@
   <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
   <meta name="viewport" content="width=device-width, initial-scale=1" />
 
+  <link rel="icon" type="image/x-icon" href="/favicon.ico" />
+
   <title>zsv playground v__VERSION__</title>
 
   <script src="https://cdn.jsdelivr.net/npm/jquery"></script>