REFAC: seperate input and target dependencies

Current: The target variables needs to be also included in the input variables.

After REFAC: The target variable is not required to be part of the input variables.

added Doing refactoring labels

added .done label and removed Doing label

added 1h 46m of time spent at 2020-03-02

mentioned in commit e98d67dd

mentioned in commit 0e36df1e

added merged in Develop label and removed .done label

closed via commit 0e36df1e

mentioned in commit e1bbf647

closed via merge request !59 (merged)