[KEYCLOAK-1923] It's possible to create new authentication flow with empty name

forms/common-themes/src/main/resources/theme/base/admin/resources/partials/create-flow.html

@@ -7,7 +7,7 @@
         <div class="form-group">
             <label class="col-md-2 control-label" for="alias">Alias </label>
             <div class="col-sm-6">
-                <input class="form-control" type="text" id="alias" name="alias" data-ng-model="flow.alias" autofocus>
+                <input class="form-control" type="text" id="alias" name="alias" data-ng-model="flow.alias" autofocus required>
             </div>
             <kc-tooltip>Specifies display name for the flow.</kc-tooltip>
         </div>