[web] Introduced node scripts build, import, convert.

netlify.toml

@@ -2,4 +2,4 @@
 [build]
   base    = "web"
   publish = "web/public"
-  command = "(cd import; python import.py); gulp build; hugo"
+  command = "npm run import && npm run build:release"

web/README.md

 ## Getting started
 
 - Download [Hugo](https://gohugo.io/#action) and put it in your `PATH`
+- Install gulp-cli globally with `npm install --global gulp-cli`, *OPTIONAL* for SCSS and Javascript
 - Install Node packages with `npm install`, *OPTIONAL* for SCSS and Javascript
 - Install Python packages with `pip install -r requirements.txt`, *OPTIONAL* for getting content from [Contentful](https://app.contentful.com/spaces/4nuqzxntzxks)
 

web/package.json

@@ -7,9 +7,10 @@
   "license": "BSD",
   "scripts": {
     "hugo": "hugo server --disableRSS",
-    "build": "webpack",
-    "build:release": "export NODE_ENV=production && webpack -p",
-    "start": "webpack-dev-server --content-base ./public"
+    "build": "gulp build && hugo",
+    "build:release": "export NODE_ENV=production && gulp build && hugo",
+    "import": "cd import && python import.py",
+    "convert": "vtkDataConverter"
   },
   "paths": {
     "src": {