update screenshots and add explanations (#325)

docs/en/manuals/editor-preferences.md

@@ -9,7 +9,13 @@ You can modify the settings of the editor from the Preferences window. The prefe
 
 ## General
 
-![](images/editor/preferences_general.png)
+![](images/editor/preferences_general.png){srcset="images/editor/[email protected] 2x"}
+
+Load External Changes on App Focus
+: Enables scanning for external changes when the editor receives focus.
+
+Open Bundle Target Folder
+: Enables opening of the target bundle folder after bundling process is done.
 
 Enable Texture Compression
 : Enables [texture compression](/manuals/texture-profiles) for all builds made from the editor.
@@ -23,13 +29,10 @@ Track Active Tab in Asset Browser
 Path to custom keymap
 : Absolute path to a file containing [custom keyboard shortcuts](/manuals/editor-keyboard-shortcuts).
 
-Code editor font
-: Name of a system installed font to use in the code editor.
-
 
 ## Code
 
-![](images/editor/preferences_code.png)
+![](images/editor/preferences_code.png){srcset="images/editor/[email protected] 2x"}
 
 Custom Editor
 : Absolute path to an external editor. On macOS it should be the path to the executable inside the .app (eg `/Applications/Atom.app/Contents/MacOS/Atom`).
@@ -40,10 +43,17 @@ Open File
 Open File at Line
 : The pattern used by the custom editor to specify which file to open and on which line number. The pattern `{file}` will be replaced by the filename to open and `{line}` by the line number.
 
+Code editor font
+: Name of a system installed font to use in the code editor.
+◊
+
 
 ## Extensions
 
-![](images/editor/preferences_extensions.png)
+![](images/editor/preferences_extensions.png){srcset="images/editor/[email protected] 2x"}
 
 Build Server
 : URL to the build server used when building a project containing [native extensions](/manuals/extensions). It is possible to add a username and access token to the URL for authenticated access to the build server. Use the following notation to specify the username and access token: `username:[email protected]`. Authenticated access is required for Nintendo Switch builds and when running your own build server instance with authentication enabled ([refer to the build server documentation](https://github.com/defold/extender/blob/dev/README_SECURITY.md) for more information). The username and password can also be set as the system environment variables `DM_EXTENDER_USERNAME` and `DM_EXTENDER_PASSWORD`.
+
+Build Server Headers
+: additional headers to the build server when building native extensions. It's important for using CloudFlare service or similar services with extender.