[refs #105] New request detail page.

- Links to request detail page from request list page.
- Vote up and Down functionality.
[refs #105] Removed catalog search bar from request listing page.
[codereview refs#105] Implemented dan's suggestions.
[codereview refs#110] fixed imports and indentation.
Merge remote-tracking branch 'origin/master' into feature/105-request-page

Conflicts:
	opendata/requests/views.py
Merge pull request #131 from openrural/feature/105-request-page

[refs #105] New request detail page.