Revert "Fixed an issue where event meta will set minimum or maximum registrants to zero if field value is empty."

This reverts commit 0fa5961.

Changing unlimited_number project so zero is a valid number.

Author: dpi

src/EventMeta.php

@@ -224,7 +224,7 @@ public function getRegistrantsMinimum() {
     if (isset($this->getEvent()->{EventManagerInterface::FIELD_REGISTRATION_REGISTRANTS_MINIMUM})) {
       $field = $this->getEvent()->{EventManagerInterface::FIELD_REGISTRATION_REGISTRANTS_MINIMUM};
       $minimum = $field->value;
-      if ($minimum !== '' && is_numeric($minimum) && $minimum >= 1) {
+      if ($minimum !== '' && is_numeric($minimum) && $minimum >= 0) {
         return $minimum;
       }
     }
@@ -238,7 +238,7 @@ public function getRegistrantsMaximum() {
     if (isset($this->getEvent()->{EventManagerInterface::FIELD_REGISTRATION_REGISTRANTS_MAXIMUM})) {
       $field = $this->getEvent()->{EventManagerInterface::FIELD_REGISTRATION_REGISTRANTS_MAXIMUM};
       $maximum = $field->value;
-      if ($maximum !== '' && is_numeric($maximum) && $maximum >= 1) {
+      if ($maximum !== '' && is_numeric($maximum) && $maximum >= 0) {
         return $maximum;
       }
     }

src/EventMetaInterface.php

@@ -141,15 +141,15 @@ public function remainingCapacity();
    * Get minimum number of registrants allowed per registration.
    *
    * @return integer
-   *   Minimum number of registrants allowed (>= 1)
+   *   Minimum number of registrants allowed (>= 0)
    */
   public function getRegistrantsMinimum();
 
   /**
    * Get maximum number of registrants allowed per registration.
    *
    * @return integer|EventMetaInterface::CAPACITY_UNLIMITED
-   *   Maximum number of registrants allowed (>= 1), or unlimited.
+   *   Maximum number of registrants allowed (>= 0), or unlimited.
    */
   public function getRegistrantsMaximum();