just to remember some useful rules for commiting to the XWiki repository.
* Before commiting something, please creates the jira task.
* When you commit, refer to the task number, for example XWIKI-106, on
your comment. Like this, the code will be added to the jira task.
* Commit only one task at a time. Like this the diff is more readable,
and it's more easy to check the code.