feat: new Web UI build system

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

webui/gulp/conf.js

@@ -0,0 +1,41 @@
+/**
+ *  This file contains the variables used in other gulp files
+ *  which defines tasks
+ *  By design, we only put there very generic config values
+ *  which are used in several places to keep good readability
+ *  of the tasks
+ */
+
+var gutil = require('gulp-util');
+
+/**
+ *  The main paths of your project handle these with care
+ */
+exports.paths = {
+  src: 'src',
+  dist: '../static',
+  tmp: '.tmp',
+  e2e: 'e2e'
+};
+
+/**
+ *  Wiredep is the lib which inject bower dependencies in your project
+ *  Mainly used to inject script tags in the index.html but also used
+ *  to inject css preprocessor deps and js files in karma
+ */
+exports.wiredep = {
+  exclude: [/\/bootstrap\.js$/, /\/bootstrap-sass\/.*\.js/, /\/bootstrap\.css/],
+  directory: 'bower_components'
+};
+
+/**
+ *  Common implementation for an error handler of a Gulp plugin
+ */
+exports.errorHandler = function(title) {
+  'use strict';
+
+  return function(err) {
+    gutil.log(gutil.colors.red('[' + title + ']'), err.toString());
+    this.emit('end');
+  };
+};