Add method to make mass action and in list components and/or after user selection

[ionosphere]

example : mass asign animals to outgone.

proposition

  list do |t|
    t.column :identification_number, :url => true
    t.column :name, :url=>true
    t.column :name, :through=>:group, :url=>true
    t.column :born_on
    t.column :sex
    t.column :name, :through=>:mother, :url=>true
    t.column :income_on
    t.column :outgone_on
    t.action :show, :url=>{:format=>:pdf}, :image=>:print
    t.action :edit
    t.action :destroy, :if=>"RECORD.destroyable\?"
  end

mass_action do |t|
...
end

[burisu]

Duplicates #42.