feat: Add title to add-principals view

Cleanup comments after rebasing

ui/core/app/routes/scopes/scope/roles/role/add-principals.js

@@ -14,6 +14,7 @@ export default class ScopesScopeRolesRoleAddPrincipalsRoute extends Route {
 
   /**
    * Empty out any previously loaded users and groups.
+   * (collectively, principals).
    */
   beforeModel() {
     this.store.unloadAll('user');
@@ -38,6 +39,7 @@ export default class ScopesScopeRolesRoleAddPrincipalsRoute extends Route {
 
   /**
    * Renders the add-principals-specific header template.
+   * Empties the actions and navigation outlets and renders a custom empty header.
    * @override
    */
   renderTemplate() {
@@ -62,7 +64,7 @@ export default class ScopesScopeRolesRoleAddPrincipalsRoute extends Route {
   // =actions
 
   /**
-   * Save principal IDs to current role.
+   * Save principal IDs to current role via the API.
    * @param {RoleModel} role
    * @param {[string]} principalIDs
    */

ui/core/app/templates/scopes/scope/roles/role.hbs

@@ -10,14 +10,14 @@
     {{outlet "header"}}
   </page.header>
 
-  <page.navigation>
-    {{outlet "navigation"}}
-  </page.navigation>
-
   <page.actions>
     {{outlet "actions"}}
   </page.actions>
 
+  <page.navigation>
+    {{outlet "navigation"}}
+  </page.navigation>
+
   <page.body>
     {{outlet}}
   </page.body>

ui/core/app/templates/scopes/scope/roles/role/add-principals.hbs

@@ -1,7 +1,9 @@
+{{title (t "actions.add-principals")}}
+
 <Form::Role::AddPrincipals
   @model={{@model.role}}
   @users={{@model.users}}
   @groups={{@model.groups}}
   @submit={{route-action "addPrincipals" @model.role}}
   @cancel={{route-action "cancel"}}
-/>
+/>