UI breaks if model_range is missing

[davidkopp]

There are cloud instances that doesn't include the property model_range. If that's the case it leads to the following error:

Uncaught (in promise) TypeError: S[2].verbose['CPU-1'].model_range is undefined

If this error occurs it is not possible to select a different instance type. A refresh of the whole page is required.

Here are some example cloud instance types (aws) that are missing the property model_range:
c7a.large, f1.2xlarge, h1.2xlarge, i3.2xlarge, m1.large, m7a.large, p2xlarge, r4.large, r7a.large, t2.micro

Expected:
It should not be a problem for the UI if this property is missing. The value of model_range should not be considered mandatory.