Counter-play to group notifications

With the recent few patches / intended patches it has all been making defending easier.
Also, with Group notifications for entries having no Counter-play except waiting till everyone is offline, which is hard with massive snitch networks with dozens of people added to it, who all live in different time zones.

So, for some there is never a time where someone is not online to see the notification.

Here is something to help balance a bit, if the user has an invisibility potion active it will not notify the group about an entry, it still will notify for log-ins and log-outs. It will also still record it to the Database if it shouldLog.

I also fixed the inconsistency in the indentation. So it is going to say I change a lot more than I actually did, check on line: https://github.com/KillerSmurf/JukeAlert/compare/Civcraft:master...master#diff-4a1d427f499cb9ee50b9bb8aab9274b9R347