[18.9.60] Improved custom reports (added visual query builder)

[novica]

Great news! Thanks for making this happen.

@lubos

To prioritize what’s important, I’d like to hear from you to see what reports you hope to generate in Manager right now. This will give me valuable feedback to see what features need to be added to custom reports first.

I described what is mandatory for Macedonia here, I hope we are getting closer to that.