Extend the documentation footer (#5454)

- makes the documentation footer aligned with the latest recommendations
- adds links with links related to privacy and terms of use in
  the documentation footer

Signed-off-by: Janusz Lisiecki <jlisiecki@nvidia.com>

docs/_templates/footer.html

@@ -0,0 +1,42 @@
+{%- set show_copyright_backup = show_copyright -%}
+{%- set show_copyright = false -%}
+{% extends "!footer.html" %}
+{%- block extrafooter %}
+
+<style>
+.footer-notice {
+  font-size: 85%;
+}
+</style>
+
+<p class="footer-notice">
+  <a href="https://www.nvidia.com/en-us/about-nvidia/privacy-policy/" target="_blank">Privacy Policy</a>
+  |
+  <a href="https://www.nvidia.com/en-us/about-nvidia/privacy-center/" target="_blank">Manage My Privacy</a>
+  |
+  <a href="https://www.nvidia.com/en-us/preferences/start/" target="_blank">Do Not Sell or Share My Data</a>
+  |
+  <a href="https://www.nvidia.com/en-us/about-nvidia/terms-of-service/" target="_blank">Terms of Service</a>
+  |
+  <a href="https://www.nvidia.com/en-us/about-nvidia/accessibility/" target="_blank">Accessibility</a>
+  |
+  <a href="https://www.nvidia.com/en-us/about-nvidia/company-policies/" target="_blank">Corporate Policies</a>
+  |
+  <a href="https://www.nvidia.com/en-us/product-security/" target="_blank">Product Security</a>
+  |
+  <a href="https://www.nvidia.com/en-us/contact/" target="_blank">Contact</a>
+</p>
+
+{%- if show_copyright_backup %}
+<p class="footer-notice">
+  {# from https://github.com/readthedocs/sphinx_rtd_theme/blob/1.0.0/sphinx_rtd_theme/footer.html#L20 #}
+  {%- if hasdoc('copyright') %}
+    {%- trans path=pathto('copyright'), copyright=copyright|e %}&#169; <a href="{{ path }}">Copyright</a> {{ copyright }}.{% endtrans %}
+  {%- else %}
+    {%- trans copyright=copyright|e %}Copyright &#169; {{ copyright }}.{% endtrans %}
+  {%- endif %}
+</p>
+{%- endif %}
+{{ super() }}
+
+{% endblock %}

docs/conf.py

@@ -27,6 +27,8 @@
 
 # -- Project information -----------------------------------------------------
 
+# remove sphinx footer
+html_show_sphinx = False
 project = "NVIDIA DALI"
 copyright = "2018-{}, NVIDIA Corporation".format(date.today().year)
 author = "NVIDIA Corporation"