Select type of contributor to add

• <%= link_to "Add a Person", new_asset_contributor_path(:asset_id=>params[:id], :contributor_type=>"person") %>
• <%= link_to "Add an Organization", new_asset_contributor_path(:asset_id=>params[:id], :contributor_type=>"organization") %>
• <%= link_to "Add a Conference", new_asset_contributor_path(:asset_id=>params[:id], :contributor_type=>"conference") %>