docs: update privacy and versioning policy (#4632)

docs/content/en/policies/privacy.md

@@ -40,10 +40,12 @@ _Authelia_ application itself does automatically. Individual installations of _A
 depending on the administrator who deploys the application. It is beyond our ability to include this in our policy and
 you should refer to their privacy policy.
 
-__TLDR__: We collect only information necessary to operate the application and properly perform security audits.
+__TLDR__: We collect only information necessary to operate the application and properly perform security audits. This
+information is only stored in the local SQL database and is NOT sent to any external service.
 
 ### Application visitors
 
+* Information collected is stored locally in the database and not sent to any external service.
 * No personal information is collected other than:
   * Username and IP address are recorded and logged for security related events for auditing purposes.
 * The information stored in the browser is:

docs/content/en/policies/versioning.md

@@ -22,6 +22,19 @@ version to `4.37` for example to prevent automatic upgrades from negatively affe
 
 There are exceptions to this versioning policy.
 
+### Advanced Customizations
+
+Some advanced customizations are not guaranteed by the versioning policy. These features require the administrator to
+ensure they keep up to date with the changes relevant to their version. While the customizations exist as a feature we
+cannot allow these customizations to hinder the development process.
+
+Notable Advanced Customizations:
+
+- Templates:
+  - Email
+  - Content Security Policy header
+- Localization Assets
+
 ### Breaking Changes
 
 All features which are marked as: