XCOMMONS-78: Add Selenium dependency management to the top level pom * Update platform test pom.
XCOMMONS-78: Add Selenium dependency management to the top level pom
* Update platform test pom.

pbondoer/xwiki-platform,pbondoer/xwiki-platform,xwiki/xwiki-platform,xwiki/xwiki-platform,xwiki/xwiki-platform,pbondoer/xwiki-platform,xwiki/xwiki-platform,pbondoer/xwiki-platform,pbondoer/xwiki-platform,xwiki/xwiki-platform