Added donation calls to action to templates
Added automated newsletter unsubscribe view
Updated Event RSS feed generation

* Improved selection of events based on both start date and end date
* Customized feed item description field to include event image and Textile formatting
Amended classifieds views so only public classifieds are accessible
Added get_img_url() function to Event model
Updated unsubscribe link in the newsletter
Minor changes to feed links etc.
Updated uid36 to uid64 password reset token (changed in Django 1.6)
Updated board member list of Rochester chapter
Updated newsletter email templates

* Added "add to my calendar" link & icon
* Added "event location map" link & icon
Updated board member list for the Rochester chapter