Add new map icons. Update map and legend.

Use static map maker icons instead of dynamic icons. Update map and
legend to use new static icons.
Create readonly api with tastypie

Create readonly api. Allow access to approved vendors and reviews.
Move api construction to the api module
Change api url 'vendor/' to 'vendor/'
New Map Icon

For vendor detail page
Merge pull request #228 from cwimbrow/topic/update_map_markers

Add new map icons. Update map and legend.
Merge pull request #226 from zbirmingham/master

Vendor Description Map Marker
Merge pull request #224 from steventlamb/topic-create_api

Topic create api