Possibility to analyse Test and Requirement Status by multiple environments

Currently, Xray only supports analyzing one environment. It is often the case where users need to analyze the status of Tests and Requirements by multiple environments. 

Usually, environments such as macOS_firefox_v18 and windows_chrome_v45 are being created so that users can later analyze the status using a combination of these environments.

Xray must provide a way to input multiple environments on the analysis scope field.

Ex:

Environment: macOS, Firefox  

Environment: Windows, Chrome