Don't show SLD Profile button for models without a profile

[smk78]

Using Release 5.0.4, clicking the Show SLD Profile button in the unified_power_rg model returns

ERROR: SLD profile calculation failed.

It works in the onion model...

[rozyczko]

model_info.profile attribute for this model is None, whereas it should be a method to calculate the profile.
This likely is a Sasmodels issue.

[smk78]

Replaced by SasView/sasmodels#475

[pkienzle]

The program is correctly not showing the profile because it is not a shape-based model.

I'm changing the title to reflect that the profile button should be disabled or hidden in sasview for models that do not have an associated profile.

[butlerpd]

I think this is related to the RPA issue SasView/sasmodels#396 (SLD also fails for RPA of course) in that it is misusing the "control" parameter. SLD seems to be attached to each model with a control parameter (and shown on the control parameter linked in the GUI interface). In other words all "multiplicity" models and only "multiplicity" models get the button.

We should decouple the show SLD from any parameter on the interface and provide that button only when a query to the model returns that an SLD function is available (hasSLD = True for example). Further that button should not be part of the parameter table IMO

At any rate this clearly cannot be done for 5.0.5 so moving it to 5.1

[rozyczko]

Not having the Show SLD button part of the table would simplify quite a lot of logic inside the table. I am for it.

[butlerpd]

This should have closed with the merge of #2647. Doing it manually