Sticky unchecked by default

For us it makes much more sense to have the sticky checkbox unselected by default. The common case for us is that two failures in a row have different causes. Sloppy developers that do not uncheck the sticky checkbox then automatically claim failures they have not caused.

I understand changing the default behavior is a bit problematic on an existing plugin and maybe a global configuration option to set the default is a better solution. That requires a bit more work and hence we run this code now.