Refactor secret form with ngrx-forms

Notable changes

• Using ngrx-forms when editing a secret form
• secret form is now seperate from list and has it's own state and container
• Refactored some reducers to match ngrx example-app style and fixed some type safety issues (removed use of any in some reducers)
• Using a integration tests now - but needs more.

Things to review

• Does it work? Any bugs?
• Is there more I could remove from list? Any dead code?

Wut

• "Creates a secret and adds a group" test makes 0 sense. app.passit.io is set so that when you hit save the form stays open. Ok. This test ensures that the form closes! What? And that passed before? 😑