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

.github/workflows/sonar-scan.yml

@@ -230,7 +230,7 @@ jobs:
             severity: info
             description: v${{steps.get-version.outputs.assembly-version}} - ${{ steps.findPr.outputs.title }}
             details: '${{ steps.parse-body.outputs.BODY }}'
-            text: <@&939225350775406643> A new nightly build has been released for docker.
+            text: <@&950058626658234398> A new nightly build has been released for docker.
             webhookUrl: ${{ secrets.DISCORD_DOCKER_UPDATE_URL }}
 
   stable: