Check labels styles

We are use a display: block style for labels containing check boxes inside
them, and the label has a width of 100%.

This means that clicking on the blank space on the right of the label text
will check/uncheck the checkbox. To avoid this behaviour we modify the
"display" attribute of the labels.

In order to prevent unexpected behaviour in terms_of_service form labels,
we add specific css for this case when define a checkbox within the
.actions class.

spec/lib/consul_form_builder_spec.rb

@@ -4,7 +4,7 @@ describe ConsulFormBuilder do
   before do
     dummy_model = Class.new do
       include ActiveModel::Model
-      attr_accessor :title, :quality
+      attr_accessor :title, :quality, :published
     end
 
     stub_const("DummyModel", dummy_model)
@@ -75,6 +75,15 @@ describe ConsulFormBuilder do
     end
   end
 
+  describe "#check_box" do
+    it "adds a checkbox-label class to the label by default" do
+      render builder.check_box(:published)
+
+      expect(page).to have_css "label", count: 1
+      expect(page).to have_css ".checkbox-label"
+    end
+  end
+
   attr_reader :content
 
   def render(content)