Disable province selector on partner edit page

PT story https://www.pivotaltracker.com/story/show/79119752
- disable province selector in partner edit view
- create scenario to test that partner province & osra_num cannot be changed for persisted records
```
f.object.new_record? ? f.input(:province) : f.input(:province, :input_html => { :disabled => true })
```
?