no issue
- keep a scratch model on the tag/member controllers rather than inside of the form components
- allows the controller's `save` task to transfer scratch values to real values before saving
- means that pressing Cmd+S whilst a field is still focused will save the expected value rather than the old value avoiding unsaved changes modals when trying to leave the screen when you think you've already saved
- fixed route and url not changing after saving a new member
- fixed error when clicking delete tag button
- cleaned up unused `showDeleteTagModal` actions
866d6eae9a