allow update of currency_id

app/Http/Controllers/Api/PlayerController.php

@@ -47,6 +47,7 @@ class PlayerController extends Controller
         $this->validate($request, [
             'character_id' => 'nullable|numeric|exists:characters,id',
             'language_id' => 'nullable|numeric|exists:languages,id',
+            'currency_id' => 'nullable|numeric|exists:currencies,id',
             'budget_intro_completed' => 'nullable',
             'calendar_intro_completed' => 'nullable'
         ]);
@@ -70,6 +71,7 @@ class PlayerController extends Controller
         $previous_character = $player->character_id;
         $player->character_id = $request->input('character_id', $player->character_id);
         $player->language_id = $request->input('language_id', $player->language_id);
+        $player->currency_id = $request->input('currency_id', $player->currency_id);
         $player->budget_intro_completed = $budget_intro_completed;
         $player->calendar_intro_completed = $calendar_intro_completed;
         $player->user_agent = json_encode($request->input('user_agent', json_decode($player->user_agent)));