- change 'server_date_modified' if licence was modified in Web-Backend (Licence.php touches property)

- oai_datacite.xslt and doi_datacite.xslt: descriptionType of abstract mus be camel case
- npm updates
- composer updates

package.json

@@ -10,23 +10,18 @@
     "devDependencies": {
         "@babel/plugin-proposal-class-properties": "^7.10.4",
         "@babel/plugin-proposal-decorators": "^7.10.5",
-        "bootstrap": "^4.0.0",
         "bootstrap-sass": "^3.4.1",
         "cross-env": "^7.0.2",
-        "jquery": "^3.2",
         "laravel-mix": "^6.0.19",
         "npm-font-open-sans": "^1.1.0",
-        "popper.js": "^1.12",
         "postcss-loader": "^5.2.0",
         "purecss-sass": "^2.0.3",
-        "resolve-url-loader": "^2.3.1",
-        "sass": "^1.20.1",
-        "sass-loader": "^8.0.0",
+        "resolve-url-loader": "^4.0.0",
+        "sass": "^1.26.10",
+        "sass-loader": "^11.1.0",
         "ts-loader": "^9.1.2",
         "typescript": "^4.0.2",
-        "vue": "^2.5.17",
         "vue-loader": "^15.9.5",
-        "vue-template-compiler": "^2.6.10",
         "webpack": "^5.37.0",
         "webpack-cli": "^4.7.0"
     },