Rewrite stack lamp and use it to integrate nextcloud SR
- Upgrade PHP to version 7.3 and add more required extensions
- Use mariadb from stack/erp5 because we won't code again all feature done there for mariadb, initialization and backup to have it up-to-date.
- Delete old files which are not used anymore
- Remove integrated resilience scripts, resilience will works with webrunner which is more stable today.
- Add Nextcloud software release with some script for auto configuration.