Replace broken logic in import template with working logic in view.

cms/djangoapps/contentstore/views/import_export.py

@@ -304,6 +304,7 @@ def _import_handler(request, courselike_key, root_name, successful_url, context_
             context_name: courselike_module,
             'successful_import_redirect_url': successful_url,
             'import_status_url': status_url,
+            'library': isinstance(courselike_key, LibraryLocator)
         })
     else:
         return HttpResponseNotFound()

cms/templates/import.html

@@ -4,10 +4,6 @@
 <%!
   from django.utils.translation import ugettext as _
   import json
-  try:
-      library = True
-  except NameError:
-      library = False
 %>
 <%block name="title">
 %if library: