Finish subuser controller

resources/lang/en/exceptions.php

@@ -55,6 +55,7 @@ return [
         'invalid_archive_exception' => 'The pack archive provided appears to be missing a required archive.tar.gz or import.json file in the base directory.',
     ],
     'subusers' => [
+        'editing_self' => 'Editing your own subuser account is not permitted.',
         'user_is_owner' => 'You cannot add the server owner as a subuser for this server.',
         'subuser_exists' => 'A user with that email address is already assigned as a subuser for this server.',
     ],

resources/lang/en/server.php

@@ -44,6 +44,8 @@ return [
         'list' => 'Accounts with Access',
         'add' => 'Add New Subuser',
         'update' => 'Update Subuser',
+        'user_assigned' => 'Successfully assigned a new subuser to this server.',
+        'user_updated' => 'Successfully updated permissions.',
         'edit' => [
             'header' => 'Edit Subuser',
             'header_sub' => 'Modify user\'s access to server.',