Removed Rafael's change to the default index page due to the following
reasons.
1. This is OpenACS, not OpenACS/dotLRN. A .LRN install properly identifies
itself as .LRN.
2. The formatting was horrible, with the subsite list ending up low on the
right-hand corner of the page.
3. The file was not localized. If we want more information on the default
index page we need to localize it.
4. Changes with this level of visibility - the first thing a potential new
developer sees upon installing the toolkit - should not be done unilaterally.
We need to talk about such things first.
