* enable RSS widget that provides a link to RSS rendering of news_section's content list.
* make RSS icon smaller according to smaller national flag icons.
* adjust CSS for these size changes.


git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@27041 20353a03-c40f-0410-a6d1-a30d3c3de9de