Fix help when using S*P in SasView GUI

[butler]

At Code Camp IV it was pointed out that Both the help and the description (quick pop up help) only point to one of the two models if P*S is up. The quick help goes to P and the full help goes to S. Paul K. points out we could replace HELP with question marks on each of P and S that takes the help to the respective place but that probably best if we chose to ditch the pop up help (see ticket #528).

[smk78]

Testing 4.2beta on W7.

Reverting this to SasView 4.2.0 as a blocker as just discovered that if you create a mixture model with Sum|Multiply then got to Plugin Models and select the mixture model, whilst the Description tells you what models are in the mixture, the Help button redirects to a nonexistent location: ​http://index.html/

It should perhaps redirect to SasView/doc/user/sasgui/perspectives/fitting/models/index.html (ie, the full list of models)?

[butler]

In b43988196e5c4f2dfbf3ec5c9b66703d5656b08d/sasview:

Fix blank page when clicking help on a plugin model

Addresses #529. Plungin models do not have model.html help pages so
check if model is plugin. If so send to general model help. If regular
built-in model send to model.html help page. eventually need better
solution .. also for original problem with ticket which is the P*S.

[smk78]

Latest issue addressed by @butler in SasView PR177 ticket-529_PluginModelDocFix branch. Now merged.

[smk78]

To note: latest issue is a workaround: better solution would be something like that outlined in the original ticket above.

Can't imagine we will fix in 4.x so moving to 5.0 as a GUI Enhancement.