Huge role refactoring/cleanup. Other commits will propably follow. Because some bugs will exist. Still important for longrun and also for auto docs/help/slideshow generation

roles/web-app-gitea/Administration.md

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+# Administration
+
+## update
+```bash 
+cd {{docker_compose.directories.instance}}
+docker-compose down
+docker-compose pull
+docker-compose up -d
+```
+Keep in mind to track and to don't interrupt the update process until the migration is done. 
+
+## set variables
+```bash
+  COMPOSE_HTTP_TIMEOUT=600
+  DOCKER_CLIENT_TIMEOUT=600
+```
+
+## recreate
+```bash
+cd {{docker_compose.directories.instance}} && docker-compose -p gitea up -d --force-recreate
+```
+
+## database access
+To access the database execute
+```bash
+  docker-compose exec -it database /bin/mysql -u gitea -p
+```
+## bash in application
+docker-compose exec -it application /bin/sh
+
+## user management
+
+### Change password
+```bash 
+docker-compose exec --user git application gitea admin user change-password \
+  --username administrator \
+  --password "MyNewSecureP@ssw0rd"
+```