small fixes

src/app/users/users.component.html

@@ -1,7 +1,7 @@
 
-<rb-icon-button icon="add" mode="primary" (click)="addNewUser()">New user</rb-icon-button>
+<rb-icon-button icon="add" mode="primary" (click)="addNewUser()" class="space-below">New user</rb-icon-button>
 
-<form *ngIf="newUser" #userForm="ngForm">
+<form *ngIf="newUser" #userForm="ngForm" class="space-below">
   <rb-form-input name="name" label="user name" appValidate="username" required [(ngModel)]="newUser.name"
                  #nameInput="ngModel">
     <ng-template rbFormValidationMessage="failure">{{nameInput.errors.failure}}</ng-template>

src/app/users/users.component.scss

@@ -10,3 +10,7 @@ td:last-child rb-icon-button {
     width: 100%;
   }
 }
+
+rb-form-select {
+  min-width: 150px;
+}