Hashing (#634)

* Added the ability to see when a scan started at.

* filename based hashing now uses last write time as well to ensure if the underlying file changes it sends a new copy

* Fixed a bug where we would reset dark mode on the book reader to dark mode if our site was on dark mode, despite user setting light mode.

* Added a single feed entry when some sort of collection, reading list, etc doesn't have anything in it.

* Allow + in the normalization to prevent some series that use + to denote the sequel from not getting merged together.

API/SignalR/MessageFactory.cs

@@ -1,4 +1,4 @@
-using System.Threading;
+using System;
 using API.DTOs.Update;
 
 namespace API.SignalR
@@ -46,19 +46,6 @@ namespace API.SignalR
             };
         }
 
-        public static SignalRMessage ScanLibraryEvent(int libraryId, string stage)
-        {
-            return new SignalRMessage()
-            {
-                Name = SignalREvents.ScanLibrary,
-                Body = new
-                {
-                    LibraryId = libraryId,
-                    Stage = stage
-                }
-            };
-        }
-
         public static SignalRMessage ScanLibraryProgressEvent(int libraryId, float progress)
         {
             return new SignalRMessage()
@@ -68,6 +55,7 @@ namespace API.SignalR
                 {
                     LibraryId = libraryId,
                     Progress = progress,
+                    EventTime = DateTime.Now
                 }
             };
         }