feat: add shared Toolbox header and themes

public/toolbox-app.json

@@ -3,19 +3,12 @@
   "schemaVersion": 1,
   "id": "de.add-ideas.xslt-tools",
   "name": "XSLT tools",
-  "version": "0.3.2",
+  "version": "0.4.0",
   "description": "Browser-based XML and XSLT transformations with executable-stylesheet trust controls.",
   "entry": "./",
   "icon": "./favicon.svg",
   "categories": ["documents", "xml", "xslt"],
   "tags": ["transform", "validate", "format", "explain"],
-  "actions": [
-    {
-      "id": "source",
-      "label": "Source",
-      "url": "https://git.add-ideas.de/zemion/xslt-tools/src/tag/v0.3.2"
-    }
-  ],
   "assets": ["./vendor/saxon/SaxonJS2.js", "./vendor/saxon/LICENSE.txt"],
   "integration": {
     "contextVersion": 1,