ISTWCMS-4638: change Add/edit to sentence case, refactor how it was done, and...

ISTWCMS-4638: change Add/edit to sentence case, refactor how it was done, and modify special alert the same way.

src/Plugin/Block/ContentManagementMenuBlock.php

@@ -96,8 +96,18 @@ class ContentManagementMenuBlock extends BlockBase implements ContainerFactoryPl
                   '#links' => [],
                 ];
 
+                // Use "Add/edit" text when there is only 1 item permitted.
+                if (in_array($sec_id, [
+                  'uw_content_management.content_types.site_footer',
+                  'uw_content_management.content_types.special_alert',
+                ])) {
+                  $add_text = $this->t('Add/edit');
+                }
+                else {
+                  $add_text = $this->t('Add');
+                }
                 $build[$id]['table'][$sec_id]['operations']['#links']['add'] = [
-                  'title' => $this->t('Add'),
+                  'title' => $add_text,
                   'url' => $item->link->getUrlObject(),
                 ];
 
@@ -115,8 +125,6 @@ class ContentManagementMenuBlock extends BlockBase implements ContainerFactoryPl
         }
       }
 
-      // Rename site footer 'Add' link to 'Add/Edit'.
-      $build['uw_content_management.content_types']['table']['uw_content_management.content_types.site_footer']['operations']['#links']['add']['title'] = $this->t('Add/Edit');
       $build['#attached']['library'][] = 'uw_dashboard/uw-styles';
     }