Add Privacy Policy and Terms of Service Page (#9513)

* Add privacy policy page and link

* Add TOS page and link

* Add update date

* [Docs] Add customizing PP and TOS

* Separate h2 user-generated content with its paragraph

* Reimplement Privacy Policy

The document is inspired from GitHub.

* Refactor to contrib

* [Docs] Mention how to add legal pages

* Reimplement Terms of Service

Adapted from GitHub

* Update revision date

* Rename to mark as sample file

* Apply suggestion from @sapk

Co-Authored-By: Antoine GIRARD <sapk@users.noreply.github.com>

* Apply suggestion from @sapk

Use absolute link instead

Co-Authored-By: Antoine GIRARD <sapk@users.noreply.github.com>

* Apply suggestion from @zeripath

Change `Last Updated` element to `<h4>`

Co-Authored-By: zeripath <art27@cantab.net>

* Apply suggestion from @zeripath

Close this `<li>` element instance

Co-Authored-By: zeripath <art27@cantab.net>

* Apply suggestion from @zeripath

Intentionally grammar fix

Co-Authored-By: zeripath <art27@cantab.net>

* Apply suggestion from @zeripath

Information grammar

Co-Authored-By: zeripath <art27@cantab.net>

* Apply suggestion from @zeripath

Cannot guarantee absolute security...

Co-Authored-By: zeripath <art27@cantab.net>

* Apply suggestion from @zeripath

Use `<h4>` element for last updated date

Co-Authored-By: zeripath <art27@cantab.net>

* Apply suggestion from @zeripath

Remove trailing `</p>` at the end of API clause

Co-Authored-By: zeripath <art27@cantab.net>

* Apply suggestion from @zeripath

Migrate privacy email domain to Your Gitea Instance

Co-Authored-By: zeripath <art27@cantab.net>

* Apply suggestions from @zeripath

Remove `<p>` container for `<ol>` definitions

Co-Authored-By: zeripath <art27@cantab.net>

* Apply suggestions from @zeripath

Remove `<p>` container that contain `<ol>` user-generated content

Co-Authored-By: zeripath <art27@cantab.net>

* Apply suggestions from @zeripath

Remove `<p>` container for private repositories `<ol>` listing

Co-Authored-By: zeripath <art27@cantab.net>

* Apply suggestions from @zeripath

Migrate remaining email domains to Your Gitea Instance

Co-Authored-By: zeripath <art27@cantab.net>

* Apply suggestion from @zeripath

Offer support

Co-Authored-By: zeripath <art27@cantab.net>

* Apply suggestion from @zeripath

Change "Your Gitea Instance" references to match your situation and Gitea project disclaimer

Co-Authored-By: zeripath <art27@cantab.net>

* Reword transmission data to reflect hosting on third-party provider

* Reword Analytics clause to reflects that not all Gitea instances deploy analytics OOTB

* Remove `<p>` container from account terms

* Migrate support email on tos to your-gitea-instance

* Reword Tracking and Analytics clause for OOTB case

* [Docs] Append privacy.html to cp destination

* Apply suggestion from @6543

Create or append to footer template

Co-Authored-By: 6543 <6543@obermui.de>

* Apply suggestion from myself

@6543 suggest replacing this `cp` line (which assumed that Gitea sources are available) with `wget` to GitHub raw link. At the time of writing this, this returned 404, but when this PR has been merged, this should get the actual page.

* Apply suggestions from @6543

1. Add gpg key to profile information
2. Add Git repos to list of User Personal Information
3. Comment out responsibility for sensitive information

Co-Authored-By: 6543 <6543@obermui.de>

Co-authored-by: Antoine GIRARD <sapk@users.noreply.github.com>
Co-authored-by: zeripath <art27@cantab.net>
Co-authored-by: Lunny Xiao <xiaolunwen@gmail.com>
Co-authored-by: 6543 <6543@obermui.de>

docs/content/doc/advanced/customizing-gitea.en-us.md

@@ -9,8 +9,8 @@ menu:
   sidebar:
     parent: "advanced"
     name: "Customizing Gitea"
-    weight: 9
     identifier: "customizing-gitea"
+    weight: 9
 ---
 
 # Customizing Gitea
@@ -82,6 +82,8 @@ just place it under your "custom/public/" directory (for instance `custom/public
 To match the current style, the link should have the class name "item", and you can use `{{AppSubUrl}}` to get the base URL:
 `<a class="item" href="{{AppSubUrl}}/impressum.html">Impressum</a>`
 
+For more information, see [Adding Legal Pages](https://docs.gitea.io/en-us/adding-legal-pages).
+
 You can add new tabs in the same way, putting them in `extra_tabs.tmpl`.
 The exact HTML needed to match the style of other tabs is in the file
 `templates/repo/header.tmpl`