Develop a preflight check list for new EMR releases

[jezdez]

The list should contain a step by step guide to confirm the functionality of ATMO, possibly run by QA personnel to confirm a new release of EMR doesn't affect the current high-level functionality of ATMO.

• If all check list items pass, the new EMR release is added to ATMO as the new default option.
• If one or more check list items fail, the EMR release is either added as a experimental option to ATMO (depending on the scope of failure) or prevents adding the release at all.
• If an unknown result is found during the check, the EMR release is not added to ATMO and the checklist amended with a new item.

This relates to #932 and other issues that dealt with adding new EMR versions to ATMO.