Add system configuration for extension (#3626)

Before, only the user configuration was supported by extensions. But it was
limiting if one has to create a system extension with configuration.
Now, both user and system configuration are supported.

1 files changed, 3 insertions, 0 deletions

diff --git a/docs/en/developers/03_Backend/05_Extensions.md b/docs/en/developers/03_Backend/05_Extensions.md
index 0c87793c9..e5e2e51e6 100644
--- a/docs/en/developers/03_Backend/05_Extensions.md
+++ b/docs/en/developers/03_Backend/05_Extensions.md
@@ -300,6 +300,9 @@ The `Minz_Extension` abstract class defines another set of methods that should n
 * the `registerViews` method registers the extension views in FreshRSS.
 * the `registerTranslates` method registers the extension translation files in FreshRSS.
 * the `registerHook` method registers hook actions in different part of the application.
+* the `getSystemConfiguration` method retrieves the extension configuration for the system.
+* the `setSystemConfiguration` method stores the extension configuration for the system.
+* the `removeSystemConfiguration` method removes the extension configuration for the system.
 * the `getUserConfiguration` method retrieves the extension configuration for the current user.
 * the `setUserConfiguration` method stores the extension configuration for the current user.
 * the `removeUserConfiguration` method removes the extension configuration for the current user.