Segment 'group' call adds underscore to field name

[molly-looker]

Customer is using grouped fields and they are being pulled into Segment with a group call rather than and identify call and so underscores are being added in the name, which is making the fields show up incorrectly on the other side.

[johnsmclay]

We noticed this as well. What is happening is that the field name it is using is the internal looker one (field.name) used in queries and stuff that conforms names like "FunFieldName" to "funfieldname" or "fun field name" to "fun_field_name" probably for wider compatibility with different query syntaxes and less quoting/escaping. On our custom version of the actions hub we did the following so that it would use the "field.label_short" instead when available.