fix(grouping): collapse all then expand sub-group, fixes #512

[ghiscoding]

• it seems that previous PR Total groups before sort #487 brought a new regression bug, the fix is to simply pass the level to the addTotals function
• fixes Group Expand broken after Collapse All #512

[ghiscoding]

@6pac are you going to be ok to release a new version after this?
It's starting to be time on my side to get this new version if possible
Thanks

[6pac]

OK, thanks for looking into that. I had a quick look and decided I needed to investigate further, but you have done that. I've had unexpected EOFY work crop up, so back to being busy :-(
Don't think I'll get to the Async Render stuff, I'll just release with this fix if that works for you.

[ghiscoding]

That would be great if possible thanks, I can help you later with the Async if you need help with that.