Fixes to index.html

1) XHTML Transitional requires a <title> tag
2) Redirect to web/ because web is actually a (virtual) directory, and this change will reduce the number of trips between client & server
Merge pull request #142 from tvernum/fix-index-html

Fixes to index.html
Merge branch 'master' of git://github.com/geoserver/geoserver