Improved Nextcloud configuration for proper background jobs execution. - Enabled cron service on Nextcloud's StatefulSet. - Updated yaml declarations on parts 4 and 5 of G033 guide, and also on related appendix guide G911. - Updated explanation regarding the lifecycle.postStart command on G033's part 4. - Expanded "Logging" section in part 5 of guide G033 regarding background jobs, also including new snapshots