[web2py] Filter records based on Subdomain value when running on GAE

[Hala]

Here is the code to print a certain record to match a subdomain or
print all -- in case someone asks:

   try:
       appname = request.env.http_host.split('.')[0]
       app_id = db(db.app.name
==str.lower(appname)).select().first().id
       apps=db(db.app.id==app_id).select()
       return dict(apps=apps)

   except:
       apps=db().select(db.app.ALL,orderby=db.app.name)
       return dict(apps=apps)