allow fallback + optional languages

zero.Web/Controllers/LanguagesController.cs

@@ -1,4 +1,6 @@
 using Microsoft.AspNetCore.Mvc;
+using System.Collections.Generic;
+using System.Linq;
 using System.Threading.Tasks;
 using zero.Core.Api;
 using zero.Core.Entities;
@@ -49,6 +51,25 @@ namespace zero.Web.Controllers
     public IActionResult GetSupportedCultures() => Json(Api.GetAllCultures(Options.SupportedLanguages));
 
 
+    public async Task<IActionResult> GetForPicker() => Json((await Api.GetAll()).Select(x => new SelectModel()
+    {
+      Id = x.Id,
+      Name = x.Name,
+      IsActive = x.IsActive
+    }));
+
+
+    public async Task<IActionResult> GetPreviews(List<string> ids)
+    {
+      return JsonPreviews(await Api.GetByIds(ids.ToArray()), item => new PreviewModel()
+      {
+        Id = item.Id,
+        Icon = "fth-globe",
+        Name = item.Name
+      });
+    }
+
+
     /// <summary>
     /// Save language
     /// </summary>