Fix old HTML log expiration
Previously the cron job:
- skipped maint_*.log.html.xz files
- compresses maint_*.log.html files if they were older than 5 days and removed them if they were not compresses and older than 10 days (i.e. basically never)
This fixes the cron job to
- remove maint_*.log.html.xz and maint_*.log.html files which are older than 10 days.
- compresses maint_*.log.html files if they were older than 5 days