Some changes required for migration to Django 1.5.
Added context processor from the montylounge branch.
Ported date-based views to Django 1.5.
Ported post_detail view to Django 1.5.
Removed outdated template.
Restored old blog post model.
Fixed post get_absolute_url method.
Install templates when using pip to install package.
Fixed post caching issue.
Added missing import.
Do not cache querysets.
Ported categories list view to CBV.
Ported tag detail view to Django 1.5.
Merge remote-tracking branch 'emorozov/master'
django 1.6 Port truncate_words