archives: allows downloading refs that have slashes and special refs. e.g f/feat1 branch names.

rhodecode/apps/repository/__init__.py

@@ -90,7 +90,7 b' def includeme(config):'
     # Files
     config.add_route(
         name='repo_archivefile',
-        pattern='/{repo_name:.*?[^/]}/archive/{fname}', repo_route=True)
+        pattern='/{repo_name:.*?[^/]}/archive/{fname:.*}', repo_route=True)
 
     config.add_route(
         name='repo_files_diff',