DOC: add few comments

app/Http/Controllers/Admin/Settings.php

@@ -25,10 +25,17 @@ class Settings extends Controller
         $this->settings = $settings;
     }
 
+    /**
+     * Get overview (with form) for editing settings
+     *
+     * @return \Illuminate\Contracts\View\Factory|\Illuminate\View\View
+     */
     public function getOverview()
     {
         $sections = App::make('registerSettingsExtension')
                        ->get();
+
+        // load all settings with language info
         $settings = $this->settings->getAllWithLanguage();
 
         return view('admin.settings.overview', [
@@ -37,6 +44,15 @@ class Settings extends Controller
         ]);
     }
 
+    /**
+     * Save all settings (ignore empty ones)
+     *
+     * When settings used to be non-empty string and user deletes it, key is also deleted from database
+     *
+     * @param Requests\SaveSettingsRequest $request
+     *
+     * @return \Illuminate\Http\RedirectResponse
+     */
     public function saveSettings(Requests\SaveSettingsRequest $request)
     {
         $data = $request->all();