Added pictures to the detail view

* pictures show up in the establishment detail view
* commands to import/export property_id from a cvs file in Durham-Data
* icon for the list view
* added address in detail view (closes #30)
Merge pull request #42 from tamcap/pictures

Added pictures to the detail view
* pictures show up in the establishment detail view
* commands to import/export property_id from a cvs file in Durham-Data
* icon for the list view
* added address in detail view (closes #30)