Request url not found

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I had made a website for one of my friend and need to show him before we upload it so I put it in the hosted it in the appengine

Uploading was successful but when any link is clicked there we recieves a message

Error: Not Found

    The requested URL /contact.html was not found on this server

my app.yaml is

application: alshafarnew
   version: 1
   runtime: python
   api_version: 1

   handlers:
   - url: /(.*\.(gif|png|jpg|ico|js|css|swf|xml))
     static_files: \1
     upload: (.*\.(gif|png|jpg|ico|js|css|swf|xml))

   - url: /(.*\.html)
     static_files: \1
     upload: index.html

   - url: /.*
     script: main.py

and main.py is

from google.appengine.ext import webapp
from google.appengine.ext.webapp.util import run_wsgi_app

class IndexHandler(webapp.RequestHandler):
    def get(self):
        if self.request.url.endswith('/'):
            path = '%sindex.html'%self.request.url

        self.redirect(path)

    def post(self):
        self.get()

application = webapp.WSGIApplication([('/.*', IndexHandler)], debug=True)

def main():
    run_wsgi_app(application)

if __name__ == "__main__":
    main()

but I checked the dashboard and find that the html files are already there

I know its some small issue or mistake from my part as I am new in websites deployment and designing
can anyone suggest possible errors .I had already gone through many sites for the solution

my page is
http://www.alshafarconstruction.appspot.com/index.html