adding time zone support to admin modules

Oqtane.Client/Modules/Admin/Files/Index.razor

@@ -53,7 +53,7 @@ else
                         <td><ActionLink Action="Details" Text="Edit" Parameters="@($"id=" + context.FileId.ToString())" ResourceKey="Details" /></td>
                         <td><ActionDialog Header="Delete File" Message="@string.Format(Localizer["Confirm.File.Delete"], context.Name)" Action="Delete" Security="SecurityAccessLevel.Admin" Class="btn btn-danger" OnClick="@(async () => await DeleteFile(context))" ResourceKey="DeleteFile" /></td>
                         <td><a href="@context.Url" target="_new">@context.Name</a></td>
-                        <td>@context.ModifiedOn</td>
+                        <td>@UtcToLocal(context.ModifiedOn)</td>
                         <td>@context.Extension.ToUpper() @SharedLocalizer["File"]</td>
                         <td>@string.Format("{0:0.00}", ((decimal)context.Size / 1000)) KB</td>
                     </Row>