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/Http/Controllers/Auth/UserInviteController.php

@@ -77,7 +77,7 @@ class UserInviteController extends Controller
         $user->save();
 
         auth()->login($user);
-        $this->showSuccessNotification( trans('auth.user_invite_success', ['appName' => setting('app-name')]));
+        $this->showSuccessNotification(trans('auth.user_invite_success', ['appName' => setting('app-name')]));
         $this->inviteService->deleteByUser($user);
 
         return redirect('/');
@@ -96,7 +96,7 @@ class UserInviteController extends Controller
         }
 
         if ($exception instanceof UserTokenExpiredException) {
-            $this->showErrorNotification( trans('errors.invite_token_expired'));
+            $this->showErrorNotification(trans('errors.invite_token_expired'));
             return redirect('/password/email');
         }