Entity Repo & Controller Refactor (#1690)

* Started mass-refactoring of the current entity repos

* Rewrote book tree logic

- Now does two simple queries instead of one really complex one.
- Extracted logic into its own class.
- Remove model-level akward union field listing.
- Logic now more readable than being large separate query and
compilation functions.

* Extracted and split book sort logic

* Finished up Book controller/repo organisation

* Refactored bookshelves controllers and repo parts

* Fixed issues found via phpunit

* Refactored Chapter controller

* Updated Chapter export controller

* Started Page controller/repo refactor

* Refactored another chunk of PageController

* Completed initial pagecontroller refactor pass

* Fixed tests and continued reduction of old repos

* Removed old page remove and further reduced entity repo

* Removed old entity repo, split out page controller

* Ran phpcbf and split out some page content methods

* Tidied up some EntityProvider elements

* Fixed issued caused by viewservice change

app/Entities/BreadcrumbsViewComposer.php

@@ -1,5 +1,6 @@
 <?php namespace BookStack\Entities;
 
+use BookStack\Entities\Managers\EntityContext;
 use Illuminate\View\View;
 
 class BreadcrumbsViewComposer
@@ -9,9 +10,9 @@ class BreadcrumbsViewComposer
 
     /**
      * BreadcrumbsViewComposer constructor.
-     * @param EntityContextManager $entityContextManager
+     * @param EntityContext $entityContextManager
      */
-    public function __construct(EntityContextManager $entityContextManager)
+    public function __construct(EntityContext $entityContextManager)
     {
         $this->entityContextManager = $entityContextManager;
     }