feat: warning for protected note without protection

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

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

@@ -1,47 +0,0 @@
-import { WebDirective } from './../../types';
-import template from '%/directives/permissions-modal.pug';
-
-class PermissionsModalCtrl {
-
-  $element: JQLite
-  callback!: (success: boolean) => void
-
-  /* @ngInject */
-  constructor($element: JQLite) {
-    this.$element = $element;
-  }
-
-  dismiss() {
-    const elem = this.$element;
-    const scope = elem.scope();
-    scope.$destroy();
-    elem.remove();
-  }
-
-  accept() {
-    this.callback(true);
-    this.dismiss();
-  }
-
-  deny() {
-    this.callback(false);
-    this.dismiss();
-  }
-}
-
-export class PermissionsModal extends WebDirective {
-  constructor() {
-    super();
-    this.restrict = 'E';
-    this.template = template;
-    this.controller = PermissionsModalCtrl;
-    this.controllerAs = 'ctrl';
-    this.bindToController = true;
-    this.scope = {
-      show: '=',
-      component: '=',
-      permissionsString: '=',
-      callback: '='
-    };
-  }
-}