- new added cronjob to delete old statistics data (older 1 year) (weekly)
- updated main menu structure (added new headlines,...)
- updated "feature page", added new section for "statistics"
- updated "system delete" function. systems with no changes (description/alias) will now get deleted instead of set "active = 0", #184
- changed max expire time from file caching (/tmp/cache) from 20d -> 10d
- changed "character log" TTL from 10s to 5s
- changed cronjob interval for "deleteExpiredData" from "weekly" to "downtime"
- changed "delete" icon (e.g. context menu on map) from "eraser" to "trash"
- removed cronjob output logging (cron_deactivateMapData.log)
- fixed non click-able character panels on login page, closed#332
