[xwiki-devs] Contrib wiki changes

Hi devs, I've modified http://contrib.xwiki.org/xwiki/bin/view/Main/ a bit for 2 reasons: 1) to update it since it was referring to code.xwiki.org which is no longer there 2) to allow a growth path for contrib project. Ie they should have well-defined JIRA/SVN/Maven/Wiki locations when they start out but if they reach a certain size/visibility they should be allowed to grow. Thus I've made 2 changes: * the ability for them to have their own groupId after a certain size/visibility * the ability for them to have their own wiki after a certain size/visibility Let me know if that's not ok for some of you. Thanks -Vincent