Various code cleanup.

app/Http/Controllers/Transaction/BulkController.php

@@ -90,7 +90,7 @@ class BulkController extends Controller
      *
      * @param BulkEditJournalRequest $request
      *
-     * @return mixed
+     * @return \Illuminate\Contracts\Foundation\Application|\Illuminate\Http\RedirectResponse|\Illuminate\Routing\Redirector
      */
     public function update(BulkEditJournalRequest $request)
     {

app/Http/Controllers/Transaction/ConvertController.php

@@ -283,7 +283,6 @@ class ConvertController extends Controller
      *
      * @return RedirectResponse|Redirector
      *
-     * @throws FireflyException
      */
     public function postIndex(Request $request, TransactionType $destinationType, TransactionGroup $group)
     {

app/Http/Controllers/Transaction/DeleteController.php

@@ -66,7 +66,7 @@ class DeleteController extends Controller
      *
      * @param TransactionGroup $group
      *
-     * @return mixed
+     * @return \Illuminate\Contracts\View\Factory|\Illuminate\Contracts\View\View|Redirector|RedirectResponse
      */
     public function delete(TransactionGroup $group)
     {

app/Http/Controllers/Transaction/MassController.php

@@ -91,7 +91,7 @@ class MassController extends Controller
      *
      * @param MassDeleteJournalRequest $request
      *
-     * @return mixed
+     * @return \Illuminate\Contracts\Foundation\Application|Redirector|RedirectResponse
      *
      */
     public function destroy(MassDeleteJournalRequest $request)

app/Http/Controllers/Transaction/ShowController.php

@@ -73,6 +73,7 @@ class ShowController extends Controller
     }
 
     /**
+     * @param Request          $request
      * @param TransactionGroup $transactionGroup
      *
      * @return Factory|View