Plugin: BigBlueButton: Add check on existing plugin_bbb_meeting_format table before creating

plugin/bbb/lib/bbb_plugin.class.php

@@ -231,12 +231,12 @@ class BBBPlugin extends Plugin
         );
 
         Database::query(
-            "CREATE TABLE plugin_bbb_meeting_format (
-                    id int unsigned not null PRIMARY KEY AUTO_INCREMENT,
-                    meeting_id int unsigned not null,
-                    format_type varchar(255) not null,
-                    resource_url text not null
-                    );"
+            "CREATE TABLE IF NOT EXISTS plugin_bbb_meeting_format (
+                id int unsigned not null PRIMARY KEY AUTO_INCREMENT,
+                meeting_id int unsigned not null,
+                format_type varchar(255) not null,
+                resource_url text not null
+            );"
         );
 
         // Copy icons into the main/img/icons folder