Separate: task 'BABEL' and create module for 'load-config-grunt'

grunt-tasks/babel.js

@@ -0,0 +1,15 @@
+'use strict';
+
+module.exports = function (grunt) {
+  return {
+    options: {
+      sourceMap: true,
+      presets: ['es2015']
+    },
+    dist: {
+      files: {
+        'dist/js/AdminLTE.js': 'build/js/AdminLTE.js'
+      }
+    }
+  };
+};