remove junk files from outdir in prod build

build.sh

@@ -36,5 +36,15 @@ php ./compile_html.php
 echo 'Copying resources...'
 
 cp -r img out/img
+cp favicon.ico out/
+
+if [[ $ESP_PROD ]]; then
+	echo 'Cleaning junk files...'
+	find out/ -name "*.orig" -delete
+	find out/ -name "*.xcf"  -delete
+	find out/ -name "*~"     -delete
+	find out/ -name "*.bak"  -delete
+	find out/ -name "*.map"  -delete
+fi
 
 echo 'ESPTerm front-end ready'