make view logic reusable

[Rizziepit]

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[Rizziepit]

@smn @miltontony @nathanbegbie ready for review.

I need to add and override views in a springboard app. So I've split up the existing SpringboardViews class to make a reusable base class. The new structure:

• springboard.views.base with SpringboardViews base class
• springboard.views.core with CoreViews for category/pages/etc
• springboard.views.auth with AuthViews for login/logout

I'm happy to discard this PR if there's a nicer way to do this. But I'd like a way to reuse the context/elastic-git logic.

[Rizziepit]

Actually, reusability is just a part of it. I think we should start splitting things up into smaller chunks.

[smn]

Is it not possible to just override the url routing in the generated application.py to another view? Would that be a simpler approach perhaps?

[Rizziepit]

Yes, you'd have to override the url routing despite these changes.Have a look at how I'm using this: universalcore/springboard-iogt#1. All I'm doing in this PR is reorganizing code so that there is a base class that view classes can extend. Maybe I'm misunderstanding you.

[smn]

We grew a config_list() function for this in springboard.utils.