Portal app creation updates

[andz-bb]

Description

Onboarding improvements

• When onboarding, the first app created will have the sample screen and data.
• The representation of the first app on the onboarding side panel has been updated to reflect the new sample screen.

App creation

• Subsequent new apps will start from scratch with empty design and data.
• builder/portal/apps/create and builder/portal/apps/templates screens have been removed. Instead, apps can be created or imported directly from the main apps screen.

• Templates screen has been replaced with a modal with the 3.0 templates.

Launchcontrol

improved onboarding, streamlined app creation, new templates flow

Feature branch env

Feature Branch Link

[qa-wolf]

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[aptkingston]

Awesome work Andy! This is much neater and speeds things up.

Still reviewing, but a few UX things I think we could improve so far:

• When using a template we could generate nicer names. Right now it's all lowercase and. I think something like Expense Approval App 1 would be better.
  
• For subsequent apps that don't get the sample data or screen, it still throws you into the design section after creation. 2 of the 3 screen options (table and form) can't actually be used because there's no data at all. I understand not wanting the sample screen for subsequent apps, but personally I'd probably keep the sample data for all apps since it's completely harmless and can be deleted if not wanted. Either that or we need to either disable those screen templates until data exists.