* FEATURE: change status on unsolve & fix assign changes
When a topic is unsolved, it should have an option,
defined in the settings, to change its status to that state.
Fix assign changes when a topic was solved, previously it was
changing the assignee.
* DEV: Change names in tests and remove comments
* DEV: Update change status on solve implementation
Update tests to verify that the change status on solve feature is working as expected.
Change the implementation to loop throught the topic assignments and update the status.
* DEV: address review feedback
* FEATURE: Prevents assign notification & change status on solved
Relates to this [topic](https://meta.discourse.org/t/assign-plugin-for-informatica/256974/94)
Add an event listener to `accepted_solution` event
Add `assigns_reminder_assigned_topics_query` modifier to not notify if
`prevent_assign_notification` setting is on.
Add settings to prevent assign notification and change status on solved
* DEV: Address review comments
Update SiteSettings names.
* DEV(WIP): Add tests for integration with discourse-assign
Add test for integration with discourse-assign plugin
checks if the assignment status is moved to `Done`
* DEV: lint solved_spec.rb
* DEV: Update test where it updates all assignments
Change `on(:accepted_solution)` is defined
Update test to use acting_user instead of admin
* DEV: lint & add tests for assigns_reminder_assigned_topics_query
Linted and added tests for `assigns_reminder_assigned_topics_query` modifier.
* DEV: Update tests based on review feedback
change plugin_initializer location
update spec with new tests to test integration with discourse-assign
* DEV: Add describe to spec for discourse-assign integration tests
* DEV: update describe name for discourse-assing spec integration
* DEV: Add more tests to spec for discourse-assign integration
* DEV: Lint solved_spec
* DEV: Lint and update spec to not have `p1` topic inside
This refactor makes for easier testing and makes things
more organised, the guardian extensions had no testing
whatsoever and I need some to make the TL -> group change.
