Fix a throw in Update, fix mod-support message relaying.
Added the expireScreenshot function, which will delete any screenshots that are older than a day, and its checks runs every 10 minutes

Server admins can now change the interval of days to set a screenshot as expired
- Settings now supports double values

Changed ScreenshotExpire to static
Added DMP Version label to the options window

<Plague_N_Pest> If he reads this there is 2 requests i would like to
make  to an upcoming update if possible 1 would be a quick way to find
out your current DMP version whilst ingame