tweak the about:new page

fix gemini home page link label

change some links in about:new - don't link gemini' /docs/ and /software/. Link the home page and let the user proceed from there - add a link to the floodgap gopher server

capitalize Engine for consistency

add some slashes to avoid redirects

add veronica 2 to about:new and reorder links

generate about_new.gmi with autoconf