Add direct link to "describe data type" page of previous step from data type mismatch indicator

This is a…

[x] Feature request
[ ] Regression (a behavior that used to work and stopped working in a new release)
[ ] Bug report  
[ ] Documentation issue or request

The problem

#1734 added a direct link to add a datamapper step right before the one requires it. But if the previous step is a shapeless connector, i.e. output data type kind is any, then datamapper step can’t consume that data until they add a user defined data type from “describe data type” configuration.

Expected behavior

So let’s add a direct link to the “describe data type” page of the previous step, if the output kind of that step is any. This makes data mapping UX even better 😃

Screenshot

API Endpoints and Schemas

Tasks involved / Steps to Reproduce

[gashcrumb]

I think though that really each step is only concerned with the previous step’s output. It’s only the datamapper that is able to ‘see’ all the previous steps output data shape.

[igarashitm]

merged #1762