merge from develop

Tsi1.Api/Tsi1.BusinessLayer/Services/TenantService.cs

-using AutoMapper;
+using AutoMapper;
 using Microsoft.EntityFrameworkCore;
 using System;
 using System.Collections.Generic;
@@ -133,7 +133,7 @@ namespace Tsi1.BusinessLayer.Services
                 .Where(x => x.Name != TenantAdmin.Name)
                 .ToListAsync();
 
-            List<TenantPreviewDto> tenantDtos = new List<TenantPreviewDto>();
+            var tenantDtos = new List<TenantPreviewDto>();
             foreach (var tenant in tenants)
             {
                 var tenantDto = _mapper.Map<TenantPreviewDto>(tenant);
@@ -156,7 +156,7 @@ namespace Tsi1.BusinessLayer.Services
                 .Where(x => x.Name != TenantAdmin.Name)
                 .ToListAsync();
 
-            List<TenantCourseDto> tenantDtos = new List<TenantCourseDto>();
+            var tenantDtos = new List<TenantCourseDto>();
             foreach (var tenant in tenants)
             {
                 var tenantDto = _mapper.Map<TenantCourseDto>(tenant);