Improvements in GoodData Writer

There are some under the hood improvements to GoodData Writer which allow you to rename datasets already exported to GoodData and freely rename attributes and facts (to this moment GoodData Writer has been automatically adding name of dataset to attribute/fact title). 

Also there is possibility to change default GoodData identifiers for datasets and their columns. This is suitable especially for projects migrated from CloudConnect, otherwise you won't need this feature probably.

This improvement is available immediately for new writers but existing ones will be migrated in several waves during upcoming days.