FEATURE: add possibilityy to upload and assign files to content pages

resources/lang/en/admin/contents.php

@@ -43,5 +43,6 @@ return [
     'homepageProtected'      => 'Your homepage is displayed only for logged in users. This may or may not be an error.',
     'parentPage'             => 'Parent page',
     'alreadyHomepage'        => 'Homepage',
+    'files'                  => 'Files',
     'lockUrl'                => 'Keep URL'
 ];

resources/lang/en/admin/history.php

@@ -7,6 +7,7 @@ return [
     'columnMetaKeywords'       => 'Meta keywords',
     'columnMetaDescription'    => 'Description',
     'columnStatus'             => 'Page visibility',
+    'columnFile'               => 'Assigned file',
     'columnTemplate'           => 'Template',
     'columnIs_homepage'        => 'Homepage',
     'columnParentPage'         => 'Parent page',
@@ -18,6 +19,7 @@ return [
     'diffPageName'             => 'Difference of :column',
     'backToOverview'           => 'Back to history overview',
     'backToEdit'               => 'Back to editation form',
-    'setupAsHomepage'          => 'Setup as homepage'
-
+    'setupAsHomepage'          => 'Setup as homepage',
+    'uploadedFile'             => 'File <ins>:file</ins> was uploaded.',
+    'deletedFile'              => 'File <del>:file</del> was removed from this page.',
 ];