Fix styling of import error.

app/assets/stylesheets/framework/tw_bootstrap.scss

@@ -172,7 +172,7 @@
   }
 
   .panel-body {
-    form {
+    form, pre {
       margin: 0;
     }
 

app/views/projects/imports/new.html.haml

@@ -5,9 +5,10 @@
 %hr
 
 - if @project.import_failed?
-  .alert.alert-danger
-    %p The repository could not be imported.
-    %pre.prepend-top-10
+  .panel.panel-danger
+    .panel-heading The repository could not be imported.
+    .panel-body
+      %pre
         :preserve
           #{@project.import_error.try(:strip)}