fix view for different_user for ad_banner. add field 'best size' for ad_banner within form

config/locales/en.yml

@@ -91,6 +91,7 @@ en:
       ab_fx: FX
       all_banners: AdBanner list
       banner_best_size: Banner Best Size
+      best_size: Best size
       new_banner: New banner
       new_image: New image
       showing: Showing

config/locales/zh_tw.yml

@@ -85,6 +85,7 @@ zh_tw:
       ab_fx: 轉場特效
       all_banners: 輪播清單
       banner_best_size: Banner 尺寸
+      best_size: 最佳尺寸
       cate_auth: 分類授權
       delete_banner: 刪除整組輪播
       new_banner: 新增輪播