Summary of the issue:

Some dialogs could be moved to tidy up the add-on store work.
These are part of the private API so moving them doesn't affect add-on authors.
Remaining changes to integrate relevant code in addonHandler and addonGui to addonStore and addonStoreGui would require deprecations or API breaking changes.

Description of development approach

2 dialogs moved to tidy up add-on store work.

Testing strategy:

Smoke test installing an add-on

Known issues with pull request:

None

Code Review Checklist:

• Documentation:
  • Change log entry
  • User Documentation
  • Developer / Technical Documentation
  • Context sensitive help for GUI changes
• Testing:
  • Unit tests
  • System (end to end) tests
  • Manual testing
• UX of all users considered:
  • Speech
  • Braille
  • Low Vision
  • Different web browsers
  • Localization in other languages / culture than English
• API is compatible with existing add-ons.
• Security precautions taken.