feat: new Web UI build system

- use generator-gulp-angular by @swiip
- remove old static file

webui/gulp/scripts.js

@@ -0,0 +1,26 @@
+'use strict';
+
+var path = require('path');
+var gulp = require('gulp');
+var conf = require('./conf');
+
+var browserSync = require('browser-sync');
+
+var $ = require('gulp-load-plugins')();
+
+
+gulp.task('scripts-reload', function() {
+  return buildScripts()
+    .pipe(browserSync.stream());
+});
+
+gulp.task('scripts', function() {
+  return buildScripts();
+});
+
+function buildScripts() {
+  return gulp.src(path.join(conf.paths.src, '/app/**/*.js'))
+    .pipe($.eslint())
+    .pipe($.eslint.format())
+    .pipe($.size())
+};