#2 Setting all databases to marked billed

[Jewe]

Hi,

I'm using version 1.8.5 for a couple of years now and am
still very happy about it.
but lately I have serveral projects at ones that I need to
report.
I open the overview, this works fine. but to set everything
marked as billed, i need to open every database.
Could you please insert the function to set all the
database to marked or every selected database?