feat: warning for protected note without protection

- Use `.sn-button` everywhere
- Delete permissions modal
- Capitalize "Clear session data"

app/assets/javascripts/directives/views/index.ts

@@ -7,7 +7,6 @@ export { InputModal } from './inputModal';
 export { MenuRow } from './menuRow';
 export { PanelResizer } from './panelResizer';
 export { PasswordWizard } from './passwordWizard';
-export { PermissionsModal } from './permissionsModal';
 export { RevisionPreviewModal } from './revisionPreviewModal';
 export { HistoryMenu } from './historyMenu';
 export { SyncResolutionMenu } from './syncResolutionMenu';