Clean up TOC on Installfest site by making some changes:

Komodo edit page no longer has 'PowerPC' variant, instead linking
to Komodo Edit 8 (which is supposedly universal)

Removed highly useless "Diagnostics for Windows" page
Don't show 'Windows Colors' on TOC when linked from 'Configure Git'
   (you can now use the method link_without_toc to shadily provide
    a link without making an entry in the TOC)

Inline 'Intel or PowerPC?' page onto the 'Panther' page.