Made "opencase_cases" and "opencase_no_cases" modules and gave the latter a version of the contextual menu

modules/opencase_entities/src/Entity/OCActivity.php

@@ -80,7 +80,7 @@ class OCActivity extends RevisionableContentEntityBase implements OCActivityInte
    * When creating an activity, it sets the case id from the URL.
    */
   public static function defaultVal() {
-    return array(\Drupal::request()->query->get('case_id'));
+    return array(\Drupal::request()->query->get('actor_id'));
   }
 
   public static function currentDateTime() {
@@ -274,20 +274,6 @@ class OCActivity extends RevisionableContentEntityBase implements OCActivityInte
       ])
       ->setRequired(TRUE);
 
-    $fields['oc_case'] = BaseFieldDefinition::create('entity_reference')
-      ->setLabel(t('Case'))
-      ->setDescription(t('The case this activity belongs to.'))
-      ->setSetting('target_type', 'oc_case')
-      ->setSetting('handler', 'default')
-      ->setTranslatable(TRUE)
-      ->setCardinality(1)
-      ->setDefaultValueCallback('Drupal\opencase_entities\Entity\OCActivity::defaultVal')
-      ->setDisplayOptions('view', [
-        'type' => 'string',
-        'weight' => -3,
-      ])
-      ->setRequired(TRUE);
-
     $fields['description'] = BaseFieldDefinition::create('string_long')
       ->setLabel(t('Description'))
       ->setRevisionable(TRUE)