Misc Fixes and Changes (#927)

* Cleaned up a ton of warnings/suggestions from the IDE.

* Fixed a bug when clearing the filters some presets could be undone.

* Renamed a class in the OPDS spec

* Simplified logic for when Fit To Screen rendering logic occurs. It now works always rather than only on cover images.

* Give some additional info to the user on what the differences between Library Types are

* Don't scan .qpkg folders (QNAP devices)

* Refactored some code to enable ability to test CoverImage Test. This is a broken test, test.zip is waiting on an issue in NetVips.

* Fixed an issue where Extra might get flagged as special too early, if in a word like Extraordinary

* Cleaned up the regex for the extra issue to be more flexible

UI/Web/src/app/admin/_modals/library-editor-modal/library-editor-modal.component.html

@@ -16,8 +16,10 @@
         </div>
         
         <div class="form-group">
-            <label for="library-type">Type</label>
-            <select class="form-control" id="library-type" formControlName="type" [attr.disabled]="this.library">
+            <label for="library-type">Type</label>&nbsp;<i class="fa fa-info-circle" placement="right" [ngbTooltip]="typeTooltip" role="button" tabindex="0"></i>
+            <ng-template #typeTooltip>Library type determines how filenames are parsed and if the UI shows Chapters (Manga) vs Issues (Comics). Book work the same way as Manga but fall back to embedded data.</ng-template>
+            <span class="sr-only" id="library-type-help">Library type determines how filenames are parsed and if the UI shows Chapters (Manga) vs Issues (Comics). Book work the same way as Manga but fall back to embedded data.</span>
+            <select class="form-control" id="library-type" formControlName="type" [attr.disabled]="this.library" aria-describedby="library-type-help">
                 <option [value]="i" *ngFor="let opt of libraryTypes; let i = index">{{opt}}</option>
             </select>
         </div>