add alias to jwt, remove caching from auth, remove db usage from files

MareSynchronosServer/MareSynchronosShared/Utils/MareClaimTypes.cs

@@ -3,6 +3,7 @@
 public static class MareClaimTypes
 {
     public const string Uid = "uid";
+    public const string Alias = "alias";
     public const string CharaIdent = "character_identification";
     public const string Internal = "internal";
     public const string Expires = "expiration_date";