Make sure return values match title.

I received this error from the feeds:

AttributeError at /feeds/news/

'PressRelease' object has no attribute 'title'

Request Method: GET
Request URL: http://sfconservancy.org/feeds/news/
Django Version: 1.4.5
Exception Type: AttributeError

'PressRelease' object has no attribute 'title'
Exception Location: /var/www/conservancy/feeds.py in item_title, line 46

I think this change fixes that.

First attempt to follow Django 1.4 feed classes.

I followed the instructions at
https://docs.djangoproject.com/en/1.4/ref/contrib/syndication/
and attempted to get these feeds to match that one.

Try putting these settings in each class.

I am not sure what the loop was for anyway.

In Django 1.2, feed_dict was deprecated.

Therefore, change this to use the method explained at:

https://docs.djangoproject.com/en/dev/releases/1.2/#feed-in-django-contrib-syndication-feeds

sfconservancy.org now has an SSL certificate; make site HTTPS-Everywhere compatible.

Change all links when possible to not mention a site, so HTTPS will be used
automatically for same-site links.

For embedded images, and other links out to the rest of the world, use HTTPS
when the site is known to support it.

Adapted Django application stuff for Conservancy; and normalized to string
"conservancy" within code and templates.