Add SFW content mode option (#6262)

* Use more neutral language for content
* Add sfw mode setting
* Make configuration context mandatory
* Add sfw class when sfw mode active
* Hide nsfw performer fields in sfw mode
* Hide nsfw sort options
* Hide nsfw filter/sort options in sfw mode
* Replace o-count with like counter in sfw mode
* Use sfw label for o-counter filter in sfw mode
* Use likes instead of o-count in sfw mode in other places
* Rename sfw mode to sfw content mode
* Use sfw image for default performers in sfw mode
* Document SFW content mode
* Add SFW mode setting to setup
* Clarify README
* Change wording of sfw mode description
* Handle configuration loading error correctly
* Hide age in performer cards

ui/v2.5/src/components/Settings/SettingsInterfacePanel/SettingsInterfacePanel.tsx

@@ -240,6 +240,14 @@ export const SettingsInterfacePanel: React.FC = PatchComponent(
             <option value="zh-CN">简体中文 (中国)</option>
           </SelectSetting>
 
+          <BooleanSetting
+            id="sfw-content-mode"
+            headingID="config.ui.sfw_mode.heading"
+            subHeadingID="config.ui.sfw_mode.description"
+            checked={iface.sfwContentMode ?? undefined}
+            onChange={(v) => saveInterface({ sfwContentMode: v })}
+          />
+
           <div className="setting-group">
             <div className="setting">
               <div>