Google does not invest resources to Google Code anymore. There is no progress over years and first feature, the Download section, was turned off.
So I decided to migrate Struts2 jQuery Plugin and Struts2 Bootstrap plugin to new locations on github.com.
Migrating Bootstrap plugin from old git repository to the new one was an easy task. But the jQuery Plugin repository was still a SVN repository. But with the tool svn2git this migration was also a task with acceptable effort. This tool was really helpfully to migrate the full history for all 1890 commits and all the tags.
Enjoy the new features like easy brunching and pull requests.