Polishing and Bugfixes (#613)

* Added a new field to Library for showing Last Scan time for a library.

Manage library page now shows last scan for each library. Tweaked the websocket code to make scan progress a bit more reliable.

* Updated docnet to provide ARM support from our recent PR. Pi users can now have a version for PDF support out of the box.

* Parser is now culture invariant to hopefully fix an issue on Italian systems not detecting . correctly

* Added the ability for the collection detail page to update when a new series is added.

* Fixed an issue where multiple chapters stacked in a volume and reading in incognito, wouldn't sort the chapters and would open the wrong one.

* Code smell

API/Data/Repositories/UserRepository.cs

@@ -237,8 +237,8 @@ namespace API.Data.Repositories
                     Libraries =  u.Libraries.Select(l => new LibraryDto
                     {
                         Name = l.Name,
-                        CoverImage = l.CoverImage,
                         Type = l.Type,
+                        LastScanned = l.LastScanned,
                         Folders = l.Folders.Select(x => x.Path).ToList()
                     }).ToList()
                 })