saml docs (#96)

* test

* cleansups

* sso too

Author: Frooodle

docs/Configuration/Configuration.md

@@ -77,6 +77,32 @@ LANGS=en_GB                    # Available languages
 SYSTEM_DEFAULTLOCALE=en-GB     # Default language
 ```
 
+**How language selection works:**
+
+Stirling-PDF determines the interface language using this priority order:
+
+1. **User's manual selection** (highest priority)
+   - When a user clicks the language globe icon and selects a language
+   - Choice is stored in browser's localStorage (persists across sessions)
+   - Storage key: `i18nextLng`
+
+2. **Browser's language preference**
+   - Automatically detected from browser's `Accept-Language` header via the `navigator` API
+   - Example: Firefox set to Swedish (sv-SE) will show Swedish UI
+
+3. **System default locale** (lowest priority)
+   - Set via `SYSTEM_DEFAULTLOCALE` or `system.defaultLocale`
+   - Only applied if user has no localStorage preference (first-time visitors)
+
+**Example:**
+- Config: `SYSTEM_DEFAULTLOCALE=en_GB`
+- Browser: Swedish (sv-SE)
+- Result: UI shows Swedish (browser preference overrides config)
+
+To force a specific default language regardless of browser settings, users must manually select it via the language globe icon.
+
+> 💡 **Tip**: Set `SYSTEM_DEFAULTLOCALE` to your organization's primary language. Users can always override it using the language selector in the top-right corner.
+
 ### Deployment Mode
 
 ```bash

docs/Configuration/External Database.md

@@ -26,7 +26,7 @@ You can configure the new `Datasource` property in your `settings.yml` to connec
 ```yaml
   datasource:
     enableCustomDatabase: false
-    customDatabaseUrl: jdbc:postgresql://localhost:5432/postgres
+    customDatabackendUrl: jdbc:postgresql://localhost:5432/postgres
     username: postgres
     password: postgres
     type: postgresql
@@ -36,7 +36,7 @@ You can configure the new `Datasource` property in your `settings.yml` to connec
 ```
 
 - `enableCustomDatabase`: Set this property to `true` to enable use of the custom database **Note: An enterprise license to use this feature**
-- `customDatabaseUrl`: Enter the database connection url for the database here. **Note: If you set the `customDatabaseUrl` you do not need to set the type, hostName, port and name, they will all be automatically derived from the url.**
+- `customDatabackendUrl`: Enter the database connection url for the database here. **Note: If you set the `customDatabackendUrl` you do not need to set the type, hostName, port and name, they will all be automatically derived from the url.**
 - `username`: The username for the database
 - `password`: The password for the database
 
@@ -80,7 +80,7 @@ services:
     environment:
       DISABLE_ADDITIONAL_FEATURES: "false" "true"
       SYSTEM_DATASOURCE_ENABLECUSTOMDATABASE: "true"
-      SYSTEM_DATASOURCE_CUSTOMDATABASEURL: "jdbc:postgresql://db:5432/stirling_pdf"
+      SYSTEM_DATASOURCE_CUSTOMDATABACKENDURL: "jdbc:postgresql://db:5432/stirling_pdf"
       SYSTEM_DATASOURCE_USERNAME: "admin"
       SYSTEM_DATASOURCE_PASSWORD: "stirling"
     # further configuration
@@ -89,7 +89,7 @@ services:
 - `depends_on`: This specifies any services that your app will need in order to run. Ensure the name matches the container name for your database
 - `DISABLE_ADDITIONAL_FEATURES`: Set this to `false` to enable security features
 - `SYSTEM_DATASOURCE_ENABLECUSTOMDATABASE`: An environment variable to connect to the database container. Set this to `true` to enable use of the external database
-- `SYSTEM_DATASOURCE_CUSTOMDATABASEURL`: An environment variable to connect to the database container. Set the connection url for the database here. **Note: If you set this url you do not need to set the type, hostName, port and name (namely `SYSTEM_DATASOURCE_TYPE`, `SYSTEM_DATASOURCE_HOSTNAME`, `SYSTEM_DATASOURCE_PORT`, `SYSTEM_DATASOURCE_NAME`), they will all be automatically derived from the url.**
+- `SYSTEM_DATASOURCE_CUSTOMDATABACKENDURL`: An environment variable to connect to the database container. Set the connection url for the database here. **Note: If you set this url you do not need to set the type, hostName, port and name (namely `SYSTEM_DATASOURCE_TYPE`, `SYSTEM_DATASOURCE_HOSTNAME`, `SYSTEM_DATASOURCE_PORT`, `SYSTEM_DATASOURCE_NAME`), they will all be automatically derived from the url.**
 - `SYSTEM_DATASOURCE_USERNAME`: An environment variable to connect to the database container. Set the username for the database. Ensure this matches the corresponding property in your database container
 - `SYSTEM_DATASOURCE_PASSWORD`: An environment variable to connect to the database container. Set the password for the database. Ensure this matches the corresponding property in your database container
 
@@ -103,7 +103,7 @@ services:
     environment:
       DISABLE_ADDITIONAL_FEATURES: "false" "true"
       SYSTEM_DATASOURCE_ENABLECUSTOMDATABASE: "true"
-      SYSTEM_DATASOURCE_CUSTOMDATABASEURL: "jdbc:postgresql://db:5432/stirling_pdf"
+      SYSTEM_DATASOURCE_CUSTOMDATABACKENDURL: "jdbc:postgresql://db:5432/stirling_pdf"
       SYSTEM_DATASOURCE_USERNAME: "admin"
       SYSTEM_DATASOURCE_PASSWORD: "stirling"
     # further configuration