hswaw/site: add landing page prototype

This rips out the existing HTML and CSS. In the end, we're not going to
use it.

In its place, it adds a simplistic landing page, hoping to gather more
attention and curiosity from other hackers that would like to make it
prettier.

Change-Id: I322b071a8510536bd6aad9252ae7aa8fe3a734bc
diff --git a/hswaw/site/main.go b/hswaw/site/main.go
index f8c6ae8..9510a3d 100644
--- a/hswaw/site/main.go
+++ b/hswaw/site/main.go
@@ -72,7 +72,5 @@
 
 func (s *service) registerHTTP(mux *http.ServeMux) {
 	mux.HandleFunc("/static/", s.handleHTTPStatic)
-	mux.HandleFunc("/", s.handleMain)
-	mux.HandleFunc("/about", s.handleAbout)
-	mux.HandleFunc("/about_en", s.handleAboutEn)
+	mux.HandleFunc("/", s.handleIndex)
 }