feat: new Web UI build system

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

webui/gulp/watch.js

@@ -0,0 +1,39 @@
+'use strict';
+
+var path = require('path');
+var gulp = require('gulp');
+var conf = require('./conf');
+
+var browserSync = require('browser-sync');
+
+function isOnlyChange(event) {
+  return event.type === 'changed';
+}
+
+gulp.task('watch', ['inject'], function () {
+
+  gulp.watch([path.join(conf.paths.src, '/*.html'), 'bower.json'], ['inject-reload']);
+
+  gulp.watch([
+    path.join(conf.paths.src, '/app/**/*.css'),
+    path.join(conf.paths.src, '/app/**/*.scss')
+  ], function(event) {
+    if(isOnlyChange(event)) {
+      gulp.start('styles-reload');
+    } else {
+      gulp.start('inject-reload');
+    }
+  });
+
+  gulp.watch(path.join(conf.paths.src, '/app/**/*.js'), function(event) {
+    if(isOnlyChange(event)) {
+      gulp.start('scripts-reload');
+    } else {
+      gulp.start('inject-reload');
+    }
+  });
+
+  gulp.watch(path.join(conf.paths.src, '/app/**/*.html'), function(event) {
+    browserSync.reload(event.path);
+  });
+});