add hostingpackages api doc

- add to docs/code.rst toctree
- add new docs/code/hostingpackages.rst containing the autodoc directives
- document undocumented code in hostingpackages app
- update translation templates

gnuviechadmin/hostingpackages/admin.py

@@ -20,6 +20,10 @@ from .models import (
 
 
 class CustomerHostingPackageCreateForm(forms.ModelForm):
+    """
+    This is the form class for creating new customer hosting packages.
+
+    """
     class Meta:
         model = CustomerHostingPackage
         fields = ['customer', 'template', 'name']
@@ -45,21 +49,41 @@ class CustomerHostingPackageCreateForm(forms.ModelForm):
 
 
 class CustomerDiskSpaceOptionInline(admin.TabularInline):
+    """
+    This class implements the inline editor for customer hosting package disk
+    space options.
+
+    """
     model = CustomerDiskSpaceOption
     extra = 0
 
 
 class CustomerMailboxOptionInline(admin.TabularInline):
+    """
+    This class implements the inline editor for customer hosting package
+    mailbox options.
+
+    """
     model = CustomerMailboxOption
     extra = 0
 
 
 class CustomerUserDatabaseOptionInline(admin.TabularInline):
+    """
+    This class implements the inline editor for customer hosting package user
+    database options.
+
+    """
     model = CustomerUserDatabaseOption
     extra = 0
 
 
 class CustomerHostingPackageAdmin(admin.ModelAdmin):
+    """
+    This class implements the admin interface for
+    :py:class:`CustomerHostingPackage`.
+
+    """
     add_form = CustomerHostingPackageCreateForm
     add_fieldsets = (
         (None, {