Plugin: Refactor plugin configuration retrieval to create if not exists

Author: AngelFQC

public/main/admin/configure_plugin.php

@@ -24,7 +24,7 @@
 
 $accessUrl = Container::getAccessUrlUtil()->getCurrent();
 
-$pluginConfiguration = $plugin->getConfigurationsByAccessUrl($accessUrl);
+$pluginConfiguration = $plugin->getOrCreatePluginConfiguration($accessUrl);
 
 $appPlugin = new AppPlugin();
 $pluginInfo = $appPlugin->getPluginInfo($plugin->getTitle(), true);