Added commando.contrib.haystack modules for overriding django-haystack commands.
Added commando.contrib.cms modules for overriding django-cms commands. Updated all other command classes so they instantiate their 'parent' class before retrieving the 'option_list,' as some command constructors modify this data.
Updated all other command classes so they instantiate their 'parent' class before retrieving the 'option_list,' as some command constructors modify this data.