added

'Unnamed environment' special indication

When installing Helios in your services, the environment information of the root span for each trace is shown for full context. From time to time this bit is missing, often due to a slip in the installation itself. Now it's easy for users to flag this and act upon it, through the info/warning sign by the environments list dropdown.

When using Helios without an SDK, the environment bit will be missing as well.