add scripts pretest,prebuild,prepreprod

package.json

@@ -5,12 +5,14 @@
   "description": "max_android_panel",
   "main": "index.js",
   "scripts": {
+    "pretest": "npm run clean",
     "test": "cross-env NODE_ENV=production PAD_ENV=test webpack --env=test --version=2.0.4 --progress --color",
     "clean": "rm -rf static/*",
     "start": "cross-env NODE_ENV=development PAD_ENV=development webpack-dev-server --version=2.0.4 --env=dev -d --history-api-fallback --hot --inline --progress --colors --port 6999 --host 0.0.0.0",
+    "prebuild": "npm run clean",
     "build": "cross-env NODE_ENV=production PAD_ENV=production webpack --env=build --version=2.0.4 --progress --color",
-    "preprod": "cross-env NODE_ENV=production PAD_ENV=preprod webpack --env=preprod --version=2.0.4 --progress --color",
-    "build:prod": "cross-env NODE_ENV=development webpack --env=build --progress --color"
+    "prepreprod": "npm run clean",
+    "preprod": "cross-env NODE_ENV=production PAD_ENV=preprod webpack --env=preprod --version=2.0.4 --progress --color"
   },
   "author": "",
   "license": "MIT",