Manga Reader Double Layout bugfixes (#1341)

* Enforce some max heights on series detail page

* Added some icon to layout mode to help the user understand how they work (Robbie needs to css it)

* Adding split-double icon

* Fixing reverse

* Added lots of debug code, refactored documentation, and added some history for wide images

* More prefetching code for wide images

* Fixed the issue where sometimes paging backwards would skip an image

* Fixed up a bug where occasionally on double (manga) paging backwards could skip a page.

Fixed a bug on double where last page could get duplicated.

* Don't update pageDimensionHistory since we don't need it

* Forgot some changes

Co-authored-by: Robbie Davis <robbie@therobbiedavis.com>

UI/Web/src/app/series-detail/series-detail.component.html

@@ -57,7 +57,7 @@
 <div [ngStyle]="{'height': ScrollingBlockHeight}" class="main-container container-fluid pt-2" *ngIf="series !== undefined" #scrollingBlock>
     <div class="row mb-3 info-container">
         <div class="col-md-2 col-xs-4 col-sm-6 d-none d-sm-block">
-            <app-image maxWidth="300px" [imageUrl]="seriesImage"></app-image>
+            <app-image maxWidth="300px" maxHeight="400px" [imageUrl]="seriesImage"></app-image>
             <!-- NOTE: We can put continue point here as Vol X Ch Y or just Ch Y or Book Z ?-->
         </div>
         <div class="col-md-10 col-xs-8 col-sm-6 mt-2">