plug users and hosting packages together

- document new feature in changelog
- add autogenerated documentation for osusers.urls and osusers.views
- add osuser URLs to gnuviechadmin.urls
- implement get_absolute_url in hostingpackages.models.CustomerHostingPackage
- use set_ldap_user_password instead of create_ldap_user for existing OS users
  in osusers.models.User.set_password
- add URL pattern set_osuser_password in osusers.urls
- implement osusers.views.SetOsUserPassword to set the password of an existing
  operating system user
- link to hosting package detail view on user dashboard
- add template hostingpackages/customerhostingpackage_detail.html
- add template osusers/user_setpassword.html

gnuviechadmin/osusers/urls.py

@@ -0,0 +1,16 @@
+"""
+This module defines the URL patterns for operating system user related views.
+
+"""
+from __future__ import absolute_import, unicode_literals
+
+from django.conf.urls import patterns, url
+
+from .views import SetOsUserPassword
+
+
+urlpatterns = patterns(
+    '',
+    url(r'^(?P<slug>[\w0-9@.+-_]+)/setpassword$', SetOsUserPassword.as_view(),
+        name='set_osuser_password'),
+)