move jquery-datetimepicker to npm/webpack (#10713)

- update to latest version and move to npm
- adapt for api changes and css class rename
- add specificity to arc-green rules as dependency css now loads later
- use imports-loader to make it load correctly
- fix some wrong paths in librejs

Co-authored-by: techknowlogick <techknowlogick@gitea.io>

webpack.config.js

@@ -85,6 +85,10 @@ module.exports = {
         exclude: /node_modules/,
         loader: 'vue-loader',
       },
+      {
+        test: require.resolve('jquery-datetimepicker'),
+        use: 'imports-loader?define=>false,exports=>false',
+      },
       {
         test: /\.js$/,
         exclude: /node_modules/,