Fix error message classes

pinry/static/js/lightbox.js

@@ -83,7 +83,7 @@ $(window).load(function() {
                 createBox(pin);
             });
             promise.error(function() {
-                message('Problem problem fetching pin data.', 'alert alert-error');
+                message('Problem problem fetching pin data.', 'alert alert-danger');
             });
         }
         return links.each(function() {
@@ -95,7 +95,7 @@ $(window).load(function() {
                     createBox(pin);
                 });
                 promise.error(function() {
-                    message('Problem problem fetching pin data.', 'alert alert-error');
+                    message('Problem problem fetching pin data.', 'alert alert-danger');
                 });
             });
         });

pinry/static/js/pin-form.js

@@ -124,7 +124,7 @@ $(window).load(function() {
                     editedPin = null;
                 });
                 promise.error(function() {
-                    message('Problem updating image.', 'alert alert-error');
+                    message('Problem updating image.', 'alert alert-danger');
                 });
             } else {
                 var data = {
@@ -144,7 +144,7 @@ $(window).load(function() {
                     dismissModal(modal);
                 });
                 promise.error(function() {
-                    message('Problem saving image.', 'alert alert-error');
+                    message('Problem saving image.', 'alert alert-danger');
                 });
             }
         });

pinry/static/js/pinry.js

@@ -70,7 +70,7 @@ $(window).load(function() {
                     tileLayout();
                 });
                 promise.error(function() {
-                    message('Problem deleting image.', 'alert alert-error');
+                    message('Problem deleting image.', 'alert alert-danger');
                 });
             });
         });