refactoring of front-end codebase

Conflicts:
	app/assets/javascripts/modules/protected_area_map.js.coffee
	app/assets/javascripts/protected_area_map.js.coffee
	app/assets/javascripts/protected_area_map.js.coffee.erb
prefer multi-line quotes and target=_blank for download links
revert protected_area_map.js.coffee.erb to master state
Merge pull request #119 from unepwcmc/frontend_refactoring

Frontend Refactoring