[BrAVISE] Change the way Environment Names are defined

[jframi]

Currently, the user typically needs to select a variable among environment details that will be used as Environment Name.
This requires to have a environment detail variable defined in the BMS that contains the appropriate Name.
This variable is used by BrAVISE to identify environments. Only environment details variables that unambiguously distinguish between the different StudyDbIds are proposed to the user to be used as environment names.
Another approach could be:

• Use StudyDbId in all case to distinguish different environments
• Propose to the user to contruct the environment name from a combination of environment details.