Misc Polishing (#413)

* Ensure that after we assign a role to a user, we show it immediately

* Cached libraryType api as that is not going to change in a viewing session. Moved some components around to tighten bundles.

* Cleaned up more TODOs
* Refactored Configuration to use getter and setters so that the interface is a lot cleaner. Updated HashUtil to use JWT Secret instead of Machine name (as docker machine name is random each boot).

Kavita.Common/HashUtil.cs

@@ -34,7 +34,7 @@ namespace Kavita.Common
         /// <returns></returns>
         public static string AnonymousToken()
         {
-            var seed = $"{Environment.ProcessorCount}_{Environment.OSVersion.Platform}_{Environment.MachineName}_{Environment.UserName}";
+            var seed = $"{Environment.ProcessorCount}_{Environment.OSVersion.Platform}_{Configuration.JwtToken}_{Environment.UserName}";
             return CalculateCrc(seed);
         }
     }