Alexander Podgorbunskiy

Results 2 issues of Alexander Podgorbunskiy

### Description When - running validations several times (not sure why exactly, but that sometimes happens in Granite) - having `:message` set explicitly in the options [This](https://github.com/pyromaniac/active_data/blob/master/lib/active_data/model/validations/nested.rb#L21) check: ```ruby to.import(error,...