Add custom JS privacy statement example

Author: sd109

chart/web-app/example-settings.yml

@@ -2,26 +2,39 @@ backend_url: http://localhost:8081
 hf_model_name: ise-uiuc/Magicoder-S-DS-6.7B
 
 # model_instruction: You are a helpful and cheerful AI assistant. Please respond appropriately.
+# llm_max_tokens:
+# llm_temperature:
+# llm_top_p:
+# llm_frequency_penalty:
+# llm_presence_penalty:
 
 page_description: "[Custom Markdown](https://google.com)"
 
 # UI theming tweaks
 theme_background_colour: "#00376c"
 theme_params:
   # primary_hue: blue
+  # Use local system fonts rather than Google fonts API
   font:
   - sans-serif
   font_mono:
   - sans-serif
 
+# Customise page title colour
 css_overrides: |
   h1 {
       color: white;
       padding-top: 1em;
   }
 
-# llm_max_tokens:
-# llm_temperature:
-# llm_top_p:
-# llm_frequency_penalty:
-# llm_presence_penalty:
+# Example of a custom JS function which adds a
+# privacy statement link to the page footer
+custom_javascript: |
+  function addPrivacyStatement() {
+      var footer = document.querySelector('footer');
+      footer.appendChild(footer.children[1].cloneNode(deep=true));
+      var item = footer.children[2].cloneNode();
+      item.href = 'https://gdpr.eu/eu-gdpr-personal-data/';
+      item.textContent = 'Privacy Statement';
+      footer.appendChild(item);
+  }