Bugfixes and Cover Chooser Upgrades (#1146)

* Fixed a bug where GetNextChapter would return a loose leaf chapter from a special when it should return nothing.

* Fixed a bug in events widget when an update comes in after a user refreshes, the active event counter could get out of sync, thus showing "Nothing going on here"

Refactored the events widget to be named appropriately.

* Refactored code to have errors during threaded tasks propagate to the UI via events widget (css still needed).

Removed ScanLibraryError in favor of generic Error event.

* Fixed up some code and added ability to remove the event from events widget

* Fixed a bug where modifiying certain fields, like summary, wouldn't lock the field

* Fixed a few bugs where lock state was not being set in the DB correctly nor were certain combinations of locking fields and editing fields.

* Removed debug code

* Updated the discord alert to tag new group

* Refactored cover upload to actually handle uploading a temp file via url on the backend so that users can user change cover by url. Fixed up some bugs that occured when chaning the image container in a previous PR.

* Code cleanup

* Cleaned up the css on the error items

* Code cleanup

API/Services/ReaderService.cs

@@ -278,7 +278,7 @@ public class ReaderService : IReaderService
             {
                 // Handle Chapters within current Volume
                 // In this case, i need 0 first because 0 represents a full volume file.
-                var chapterId = GetNextChapterId(currentVolume.Chapters.OrderBy(x => double.Parse(x.Number), _chapterSortComparerForInChapterSorting),
+                var chapterId = GetNextChapterId(currentVolume.Chapters.OrderBy(x => double.Parse(x.Number), _chapterSortComparer),
                     currentChapter.Range, dto => dto.Range);
                 if (chapterId > 0) return chapterId;
 
@@ -291,6 +291,9 @@ public class ReaderService : IReaderService
             var chapters = volume.Chapters.OrderBy(x => double.Parse(x.Number), _chapterSortComparer).ToList();
             if (currentChapter.Number.Equals("0") && chapters.Last().Number.Equals("0"))
             {
+                // We need to handle an extra check if the current chapter is the last special, as we should return -1
+                if (currentChapter.IsSpecial) return -1;
+
                 return chapters.Last().Id;
             }