Merge pull request jazzband#10 from cberner/master

This patch fixes the way urls are parsed to support blank passwords, usernames, hostnames...etc. This is particularly important in dev environments with Postgres, where blank passwords currently don't work

dj_database_url.py

@@ -71,11 +71,11 @@ def parse(url):
 
     # Update with environment configuration.
     config.update({
-        'NAME': path,
-        'USER': url.username,
-        'PASSWORD': url.password,
-        'HOST': url.hostname,
-        'PORT': url.port,
+        'NAME': path or '',
+        'USER': url.username or '',
+        'PASSWORD': url.password or '',
+        'HOST': url.hostname or '',
+        'PORT': url.port or '',
     })
 
     if url.scheme in SCHEMES: