better error message for tenant view sanity check
diff --git a/planetstack/core/xoslib/static/js/xosTenant.js b/planetstack/core/xoslib/static/js/xosTenant.js
index 4225cac..cd2b079 100644
--- a/planetstack/core/xoslib/static/js/xosTenant.js
+++ b/planetstack/core/xoslib/static/js/xosTenant.js
@@ -395,6 +395,9 @@
 

 XOSTenantApp.sanityCheck = function() {

     errors = [];

+    if (xos.tenant().blessed_deployments && xos.tenant().blessed_deployments.length == 0) {

+        errors.push("no blessed deployments");

+    }

     if (xos.tenant().blessed_service_classes.length == 0) {

         errors.push("no blessed service classes");

     }

@@ -412,7 +415,10 @@
     }

 

     if (errors.length > 0) {

-         $("#tenantSummary").html("Tenant view sanity check failed<br>" + errors.join("<br>"));

+         $("#tenantSummary").html("Tenant view sanity check failed: <blockquote>" + errors.join("<br>") + "</blockquote>" +

+                "Usually errors in the Tenant view imply that nodes, sites, or " +

+                "images need to be added to a Deployment. The Deployment(s) that " +

+                "the tenant view is hardcoded to use are " +  xos.tenant().blessed_deployment_names.join(",") + ".");

          return false;

     }