Added VAT calculator tool and applet, Cleaned up launch logs and DOM trash

Update .gitignore, vat-calculator.yml, and 17 more files...

data/tools/vat-calculator.yml

@@ -0,0 +1,31 @@
+
+tools:
+  - id: "vat-calculator"
+    applet_id: "vat-calculator"
+    metadata:
+      head:
+        title_key: "meta.title"
+        description_key: "meta.description"
+      opengraph:
+        title_key: "meta.title"
+        description_key: "meta.description"
+        type: null
+        url: null
+        image_url: "/resources/NibblePoker/images/tools/vat-calculator/main-quiet.png"
+        image_type: null
+      twitter:
+        title_key: "meta.title"
+        description_key: "meta.description"
+      index:
+        priority: 500
+        enable: true
+        title_key: "meta.title"
+        preamble_key: "meta.description"
+        image_url: "/resources/NibblePoker/images/tools/vat-calculator/main-quiet.png"
+        image_alt_key: ""
+      general:
+        icon: "fab fa-python"
+        title_key: "meta.title"
+        subtitle_key: "article.subtitle"
+        tags:
+          - "calculator"