Fixing bug in outputting linkable file.

Improve node edit form
Correct positioning of checkboxes, typo error

Improve node edit form

Bugs fixed:
#2972989: Call to a member function access() on null in Drupal\webform_views\Plugin\views\field\WebformSubmissionField->render()
#2945921: Notice in install and every module activation afterwards

• Issue #2975618 by Muath Khraisat: Add support for [Vartheme Material] pages with one or two cards and fix spacing for card-deck on mobiles.

• Issue #2972645 by Muath Khraisat: Add support for [Vartheme] pages with one or two cards and fix spacing for card-deck on mobiles.