login fixes, auth message and alignment

app/assets/stylesheets/common/base/login.scss

@@ -46,6 +46,11 @@ $input-width: 220px;
       width: 100%;
     }
   }
+  .modal-footer {
+    .inline-spinner {
+      display: inline-flex;
+    }
+  }
 }
 
 .create-account {
@@ -138,6 +143,10 @@ $input-width: 220px;
   }
 }
 
+.auth-message {
+  padding: 0 15px 15px 15px
+}
+
 .modal tr.instructions {
   display: flex;
   flex-direction: column;