Fix 404 error

Fixes

```
/app/vendor/bundle/ruby/1.9.1/gems/mechanize-2.5.1/lib/mechanize/http/agent.rb:304:in `fetch' : 404 => Net::HTTPNotFound for http://www.ryde.nsw.gov.au/Development/Development+Applications/DAs+on+Exhibition/Received+Development+Applications -- unhandled response (Mechanize::ResponseCodeError)
	from /app/vendor/bundle/ruby/1.9.1/gems/mechanize-2.5.1/lib/mechanize.rb:407:in `get'
	from scraper.rb:9:in `<main>'
```