fix build script to also build html

.gitignore

@@ -1,6 +1,7 @@
 _env.php
 js/*
 css/*
+out/*
 !.gitkeep
 node_modules/
 *.~

build.sh

@@ -19,4 +19,7 @@ echo "Building CSS..."
 
 sass --style=compressed sass/app.scss css/app.css
 
+echo "Building HTML..."
+php ./build_html.php
+
 echo "ESPTerm front-end ready"

build_html.php

@@ -16,7 +16,7 @@ function process_html($s) {
 
 $no_tpl_files = ['help', 'cfg_wifi_conn'];
 
-$dest = ESP_DEMO ? __DIR__ . '/../html_demo/' : __DIR__ . '/../html/';
+$dest = __DIR__ . '/out/';
 
 ob_start();
 foreach($_pages as $_k => $p) {