TIKA-1383 Fixing TikaWelcome issues

git-svn-id: https://svn.apache.org/repos/asf/tika/trunk@1615937 13f79535-47bb-0310-9956-ffa450edef68
Restore the HTML test of the Tika Welcome page, accidently zapped in the TIKA-1383 changes

git-svn-id: https://svn.apache.org/repos/asf/tika/trunk@1615939 13f79535-47bb-0310-9956-ffa450edef68