Add CONTRIBUTING.md and load high-resolution image on the map after the medium-res image has been placed.
Refactor app/views/maps and move views for comments and tags into partials in their own directories.
Merge branch 'annotation-interface' of https://github.com/manleyjster/mapknitter into annotation-interface

Conflicts:
	app/assets/javascripts/mapknitter.js
Refactor home page with new styles and updated links to reflect new RESTful routes.
Add MapKnitter header to map viewing and editing pages.