NIFIREG-78 - Disable new policy option when registry is unsecured

This closes #78.

Signed-off-by: Bryan Bende <bbende@apache.org>
diff --git a/nifi-registry-web-ui/src/main/webapp/components/administration/workflow/sidenav/manage-bucket/nf-registry-manage-bucket.html b/nifi-registry-web-ui/src/main/webapp/components/administration/workflow/sidenav/manage-bucket/nf-registry-manage-bucket.html
index f23b4da..9f48951 100644
--- a/nifi-registry-web-ui/src/main/webapp/components/administration/workflow/sidenav/manage-bucket/nf-registry-manage-bucket.html
+++ b/nifi-registry-web-ui/src/main/webapp/components/administration/workflow/sidenav/manage-bucket/nf-registry-manage-bucket.html
@@ -44,7 +44,7 @@
             <div flex fxLayout="row" fxLayoutAlign="space-between center">
                 <span class="md-card-title">Policies ({{userIdentitiesWithPolicies.length + groupIdentitiesWithPolicies.length}})</span>
                 <button color="fds-secondary"
-                        [disabled]="!nfRegistryService.currentUser.resourcePermissions.policies.canWrite"
+                        [disabled]="nfRegistryService.currentUser.anonymous || !nfRegistryService.currentUser.resourcePermissions.policies.canWrite"
                         mat-raised-button
                         (click)="addPolicy()">
                     New Policy