Misc Bugs (#510)

* Don't show bookmark context actionable for books

* Fixed an issue where when adding a collection tag, the logic wouldn't assume the tag already existed in DB and would reset it.

* After editing a series on library page, ensure we refresh collection tags.

* Reload recently added section after changing a series

* Moved all Stat logger events to Debug

* Refactored scroll logic into a single service to keep the code consistent.

UI/Web/src/app/scroll.service.ts

@@ -0,0 +1,22 @@
+import { Injectable } from '@angular/core';
+
+@Injectable({
+  providedIn: 'root'
+})
+export class ScrollService {
+
+  constructor() { }
+
+  get scrollPosition() {
+    return (window.pageYOffset 
+      || document.documentElement.scrollTop 
+      || document.body.scrollTop || 0);
+  }
+
+  scrollTo(top: number) {
+    window.scroll({
+      top: top,
+      behavior: 'smooth' 
+    });
+  }  
+}