fix #1640 to resolve issue with server prerendering, upgrade Installer to Bootstrap5, add more defensive logic and logging to DatabaseManager, fix file logger issue, update Pager to use Bootstrap5 pagination, add expiry date support for commercial extensions

Oqtane.Server/Infrastructure/Logging/FileLogger.cs

@@ -55,7 +55,7 @@ namespace Oqtane.Infrastructure
             var filepath = Path.Combine(folder, "error.log");
 
             // only retain an error log for the current day as it is intended for development purposes
-            if (File.GetCreationTime(filepath).ToUniversalTime().Date < DateTime.UtcNow.Date && File.Exists(filepath))
+            if (File.Exists(filepath) && File.GetLastWriteTimeUtc(filepath).Date < DateTime.UtcNow.Date)
             {
                 File.Delete(filepath);
             }